77 results on '"Reddy, Ashok"'
Search Results
2. Efficacy of the Canadian CT Head Rule in Patients Presenting to the Emergency Department with Minor Head Injury.
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Reddy, Ashok, Poonthottathil, Fawaz, Jonnakuti, Rani, and Thomas, Roney
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HOSPITAL emergency services , *RESEARCH methodology evaluation , *CROSS-sectional method , *RESEARCH methodology , *MEDICAL care costs , *SEVERITY of illness index , *GLASGOW Coma Scale , *DESCRIPTIVE statistics , *COMPUTED tomography , *SENSITIVITY & specificity (Statistics) , *PREDICTIVE validity , *HEAD injuries , *LONGITUDINAL method , *DISCHARGE planning , *EMERGENCY medicine - Abstract
Introduction: Approximately, one in three computed tomography (CT) scans performed for head injury may be avoidable. We evaluate the efficacy of the Canadian CT head rule (CCHR) on head CT imaging in minor head injury (MHI) and its association of Glasgow Coma Scale (GCS) and structural abnormality. Materials and methods: We conducted a prospective cross-sectional study from May 2018 to October 2019 in the Department of Emergency Medicine, Pushpagiri Institute of Medical Sciences and Research Centre, Thiruvalla, Kerala. The CCHR is applied to patients with MHIs (GCS 13-15) after initial stabilization and it is ascertained, if they require a non-contrast CT head and imaging is done. For those who do not require CT head as per the CCHR are excluded from this study. After imaging the patients who have a positive finding on CT head are admitted and followed up if they underwent any neurosurgical intervention, those with no findings in CT head are discharged from the hospital. A total of 203 patients were included during study period. Results: A total of 203 patients were included in study with mean age of 49.5 years. Approximately, 70% (142) were male. Sensitivity of CCHR for predicting positive CT finding in the present study sample was 68% and specificity was 42.5%. Conclusion: Canadian CT head rule is a useful tool in the Emergency Department for predicting the requirement of CT in patients with MHI. Canadian CT head rule can reduce the number of CT scans ordered following MHI in ED, thus improving the healthcare costs. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
3. Estimation of auto encoder over recurrent neural network to improve analysis rate in IMDB-movie review system.
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Reddy, Chenna Reddy Ashok and Rama, A.
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RECURRENT neural networks , *NATURAL language processing - Abstract
To increase the accuracy of analysis rate in IMDB Movie review dataset by employing Natural Language Processing concept, which deals with actual categorization and prediction of real-time sentiments. There are a total of 10 samples of Auto Encoder and 10 samples of RNN algorithm in 2 groups to be assessed using the proposed methodology with Gpower 80%. Compared to Recurrent Neural Network, with accuracy of 85.5%, the proposed Novel Auto-Encoder technique has an accuracy of 89.5%, which is much better in classification. Statistical insignificance between RNN and Auto Encoder is 0.408 (p>0.05). Improving analysis rate was achieved better in Autoencoder compared with Recurrent Neural Network Algorithm. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
4. Behaviorally Informed Text Message Nudges to Schedule COVID-19 Vaccinations: A Randomized Controlled Trial.
- Author
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Reddy, Ashok, Geyer, John, Wheat, Chelle, Schuttner, Linnaea, Chen, Anders, Deeds, Stephanie, Liao, Joshua M., Agrawal, Nidhi, and Nelson, Karin M.
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TEXT messages , *COVID-19 pandemic , *COVID-19 vaccines , *VACCINE hesitancy , *VETERANS' health - Abstract
Background: Vaccine hesitancy, especially related to COVID-19 vaccinations among Veterans, may limit uptake. Behaviorally informed text-based messages have the potential to improve uptake of COVID-19 vaccinations.To evaluate the impact of two different behaviorally informed text message nudges on COVID-19 vaccine scheduling and completion, compared to standard control message.Prospective, three-arm patient-level randomized quality improvement trial.Between March and May 2021, 20,523 Veterans were eligible for the initial series of COVID-19 vaccination, enrolled at two large Veterans Health Administration sites.Arm 1 (Control): standard scheduling message; Arm 2 (Social Good): standard message plus behaviorally informed text message “When you get a vaccine now, you help protect yourself, your family, and your community”; and Arm 3 (Scarcity): standard plus behaviorally informed text message “Only a limited number of vaccine appointments are available.”Outcomes were vaccine scheduling and/or completion rate within 7 days of receipt of text message (primary), and within 14 days and 30 days after receipt of text message (secondary).Veterans had an overall rate of 19% of scheduling or receiving a vaccination in 7 days. In our adjusted intention-to-treat analysis, we found no difference between intervention social good or scarcity (aOR 0.98, 95% CI, 0.88–1.09, for both arms) compared to standard scheduling message. We found no statistical differences in our secondary outcomes.During the initial phases of vaccine roll-out, two behaviorally informed text messages did not increase COVID-19 vaccination rates among Veterans compared to a standard scheduling message.Objective: Vaccine hesitancy, especially related to COVID-19 vaccinations among Veterans, may limit uptake. Behaviorally informed text-based messages have the potential to improve uptake of COVID-19 vaccinations.To evaluate the impact of two different behaviorally informed text message nudges on COVID-19 vaccine scheduling and completion, compared to standard control message.Prospective, three-arm patient-level randomized quality improvement trial.Between March and May 2021, 20,523 Veterans were eligible for the initial series of COVID-19 vaccination, enrolled at two large Veterans Health Administration sites.Arm 1 (Control): standard scheduling message; Arm 2 (Social Good): standard message plus behaviorally informed text message “When you get a vaccine now, you help protect yourself, your family, and your community”; and Arm 3 (Scarcity): standard plus behaviorally informed text message “Only a limited number of vaccine appointments are available.”Outcomes were vaccine scheduling and/or completion rate within 7 days of receipt of text message (primary), and within 14 days and 30 days after receipt of text message (secondary).Veterans had an overall rate of 19% of scheduling or receiving a vaccination in 7 days. In our adjusted intention-to-treat analysis, we found no difference between intervention social good or scarcity (aOR 0.98, 95% CI, 0.88–1.09, for both arms) compared to standard scheduling message. We found no statistical differences in our secondary outcomes.During the initial phases of vaccine roll-out, two behaviorally informed text messages did not increase COVID-19 vaccination rates among Veterans compared to a standard scheduling message.Design: Vaccine hesitancy, especially related to COVID-19 vaccinations among Veterans, may limit uptake. Behaviorally informed text-based messages have the potential to improve uptake of COVID-19 vaccinations.To evaluate the impact of two different behaviorally informed text message nudges on COVID-19 vaccine scheduling and completion, compared to standard control message.Prospective, three-arm patient-level randomized quality improvement trial.Between March and May 2021, 20,523 Veterans were eligible for the initial series of COVID-19 vaccination, enrolled at two large Veterans Health Administration sites.Arm 1 (Control): standard scheduling message; Arm 2 (Social Good): standard message plus behaviorally informed text message “When you get a vaccine now, you help protect yourself, your family, and your community”; and Arm 3 (Scarcity): standard plus behaviorally informed text message “Only a limited number of vaccine appointments are available.”Outcomes were vaccine scheduling and/or completion rate within 7 days of receipt of text message (primary), and within 14 days and 30 days after receipt of text message (secondary).Veterans had an overall rate of 19% of scheduling or receiving a vaccination in 7 days. In our adjusted intention-to-treat analysis, we found no difference between intervention social good or scarcity (aOR 0.98, 95% CI, 0.88–1.09, for both arms) compared to standard scheduling message. We found no statistical differences in our secondary outcomes.During the initial phases of vaccine roll-out, two behaviorally informed text messages did not increase COVID-19 vaccination rates among Veterans compared to a standard scheduling message.Participants: Vaccine hesitancy, especially related to COVID-19 vaccinations among Veterans, may limit uptake. Behaviorally informed text-based messages have the potential to improve uptake of COVID-19 vaccinations.To evaluate the impact of two different behaviorally informed text message nudges on COVID-19 vaccine scheduling and completion, compared to standard control message.Prospective, three-arm patient-level randomized quality improvement trial.Between March and May 2021, 20,523 Veterans were eligible for the initial series of COVID-19 vaccination, enrolled at two large Veterans Health Administration sites.Arm 1 (Control): standard scheduling message; Arm 2 (Social Good): standard message plus behaviorally informed text message “When you get a vaccine now, you help protect yourself, your family, and your community”; and Arm 3 (Scarcity): standard plus behaviorally informed text message “Only a limited number of vaccine appointments are available.”Outcomes were vaccine scheduling and/or completion rate within 7 days of receipt of text message (primary), and within 14 days and 30 days after receipt of text message (secondary).Veterans had an overall rate of 19% of scheduling or receiving a vaccination in 7 days. In our adjusted intention-to-treat analysis, we found no difference between intervention social good or scarcity (aOR 0.98, 95% CI, 0.88–1.09, for both arms) compared to standard scheduling message. We found no statistical differences in our secondary outcomes.During the initial phases of vaccine roll-out, two behaviorally informed text messages did not increase COVID-19 vaccination rates among Veterans compared to a standard scheduling message.Intervention: Vaccine hesitancy, especially related to COVID-19 vaccinations among Veterans, may limit uptake. Behaviorally informed text-based messages have the potential to improve uptake of COVID-19 vaccinations.To evaluate the impact of two different behaviorally informed text message nudges on COVID-19 vaccine scheduling and completion, compared to standard control message.Prospective, three-arm patient-level randomized quality improvement trial.Between March and May 2021, 20,523 Veterans were eligible for the initial series of COVID-19 vaccination, enrolled at two large Veterans Health Administration sites.Arm 1 (Control): standard scheduling message; Arm 2 (Social Good): standard message plus behaviorally informed text message “When you get a vaccine now, you help protect yourself, your family, and your community”; and Arm 3 (Scarcity): standard plus behaviorally informed text message “Only a limited number of vaccine appointments are available.”Outcomes were vaccine scheduling and/or completion rate within 7 days of receipt of text message (primary), and within 14 days and 30 days after receipt of text message (secondary).Veterans had an overall rate of 19% of scheduling or receiving a vaccination in 7 days. In our adjusted intention-to-treat analysis, we found no difference between intervention social good or scarcity (aOR 0.98, 95% CI, 0.88–1.09, for both arms) compared to standard scheduling message. We found no statistical differences in our secondary outcomes.During the initial phases of vaccine roll-out, two behaviorally informed text messages did not increase COVID-19 vaccination rates among Veterans compared to a standard scheduling message.Main Measures: Vaccine hesitancy, especially related to COVID-19 vaccinations among Veterans, may limit uptake. Behaviorally informed text-based messages have the potential to improve uptake of COVID-19 vaccinations.To evaluate the impact of two different behaviorally informed text message nudges on COVID-19 vaccine scheduling and completion, compared to standard control message.Prospective, three-arm patient-level randomized quality improvement trial.Between March and May 2021, 20,523 Veterans were eligible for the initial series of COVID-19 vaccination, enrolled at two large Veterans Health Administration sites.Arm 1 (Control): standard scheduling message; Arm 2 (Social Good): standard message plus behaviorally informed text message “When you get a vaccine now, you help protect yourself, your family, and your community”; and Arm 3 (Scarcity): standard plus behaviorally informed text message “Only a limited number of vaccine appointments are available.”Outcomes were vaccine scheduling and/or completion rate within 7 days of receipt of text message (primary), and within 14 days and 30 days after receipt of text message (secondary).Veterans had an overall rate of 19% of scheduling or receiving a vaccination in 7 days. In our adjusted intention-to-treat analysis, we found no difference between intervention social good or scarcity (aOR 0.98, 95% CI, 0.88–1.09, for both arms) compared to standard scheduling message. We found no statistical differences in our secondary outcomes.During the initial phases of vaccine roll-out, two behaviorally informed text messages did not increase COVID-19 vaccination rates among Veterans compared to a standard scheduling message.Key Results: Vaccine hesitancy, especially related to COVID-19 vaccinations among Veterans, may limit uptake. Behaviorally informed text-based messages have the potential to improve uptake of COVID-19 vaccinations.To evaluate the impact of two different behaviorally informed text message nudges on COVID-19 vaccine scheduling and completion, compared to standard control message.Prospective, three-arm patient-level randomized quality improvement trial.Between March and May 2021, 20,523 Veterans were eligible for the initial series of COVID-19 vaccination, enrolled at two large Veterans Health Administration sites.Arm 1 (Control): standard scheduling message; Arm 2 (Social Good): standard message plus behaviorally informed text message “When you get a vaccine now, you help protect yourself, your family, and your community”; and Arm 3 (Scarcity): standard plus behaviorally informed text message “Only a limited number of vaccine appointments are available.”Outcomes were vaccine scheduling and/or completion rate within 7 days of receipt of text message (primary), and within 14 days and 30 days after receipt of text message (secondary).Veterans had an overall rate of 19% of scheduling or receiving a vaccination in 7 days. In our adjusted intention-to-treat analysis, we found no difference between intervention social good or scarcity (aOR 0.98, 95% CI, 0.88–1.09, for both arms) compared to standard scheduling message. We found no statistical differences in our secondary outcomes.During the initial phases of vaccine roll-out, two behaviorally informed text messages did not increase COVID-19 vaccination rates among Veterans compared to a standard scheduling message.Conclusions: Vaccine hesitancy, especially related to COVID-19 vaccinations among Veterans, may limit uptake. Behaviorally informed text-based messages have the potential to improve uptake of COVID-19 vaccinations.To evaluate the impact of two different behaviorally informed text message nudges on COVID-19 vaccine scheduling and completion, compared to standard control message.Prospective, three-arm patient-level randomized quality improvement trial.Between March and May 2021, 20,523 Veterans were eligible for the initial series of COVID-19 vaccination, enrolled at two large Veterans Health Administration sites.Arm 1 (Control): standard scheduling message; Arm 2 (Social Good): standard message plus behaviorally informed text message “When you get a vaccine now, you help protect yourself, your family, and your community”; and Arm 3 (Scarcity): standard plus behaviorally informed text message “Only a limited number of vaccine appointments are available.”Outcomes were vaccine scheduling and/or completion rate within 7 days of receipt of text message (primary), and within 14 days and 30 days after receipt of text message (secondary).Veterans had an overall rate of 19% of scheduling or receiving a vaccination in 7 days. In our adjusted intention-to-treat analysis, we found no difference between intervention social good or scarcity (aOR 0.98, 95% CI, 0.88–1.09, for both arms) compared to standard scheduling message. We found no statistical differences in our secondary outcomes.During the initial phases of vaccine roll-out, two behaviorally informed text messages did not increase COVID-19 vaccination rates among Veterans compared to a standard scheduling message. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
5. Impact of Home Telehealth Expansion on High-Cost Utilization Among Veterans Health Administration Patients with Diabetes.
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Reddy, Ashok, Gunnink, Eric J., Rojas, Jorge, Nelson, Karin, and Wong, Edwin S.
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EMERGENCY room visits , *PROPENSITY score matching , *VETERANS' health , *DISEASE management , *OUTPATIENT medical care - Abstract
Background: Home telehealth (HT) services have rapidly expanded in the Veterans Health Administration (VHA), but little is known about the real-world impact of the expansion of these services on utilization.To evaluate the impact of expanding HT diabetes services in VHA on high-cost utilization.This cohort study used cross-temporal propensity score matching to identify patients with diabetes who would receive HT services (treatment group) with program expansion (treatment group) with a comparison group of patients with diabetes who did not receive HT services (control group) between 2010 and 2018. A difference-in-differences design was used to compare pre-post changes in high-cost utilization between propensity-matched groups. Data used was from the VHA’s Corporate Data Warehouse.VHA patients with diabetes,
n =7214 in the treatment group who received HT services, andn =1,067,138 in the control group who did not receive HT services.Emergency department (ED) visits, all-cause hospitalization, and hospitalizations for ambulatory care sensitive conditions (ACSCs).In the baseline period, patients in our sample had a mean age of 67 years old (SD=11 years), were 97% male, and 78% had a hemoglobin A1c (HbA1c) < 8%. The increase in HT use was associated with a net increase of ED visits per patient (0.215 95% CI [0.152, 0.279]), all-cause hospitalization (0.053 95% CI [0.032, 0.074]), and ACSC hospitalization (0.032 95% CI [0.019, 0.045]).Expanding HT or remote monitoring services may lead to additional needs being identified for patients, including increased access to in-person care, such as ED or hospital services.Objective: Home telehealth (HT) services have rapidly expanded in the Veterans Health Administration (VHA), but little is known about the real-world impact of the expansion of these services on utilization.To evaluate the impact of expanding HT diabetes services in VHA on high-cost utilization.This cohort study used cross-temporal propensity score matching to identify patients with diabetes who would receive HT services (treatment group) with program expansion (treatment group) with a comparison group of patients with diabetes who did not receive HT services (control group) between 2010 and 2018. A difference-in-differences design was used to compare pre-post changes in high-cost utilization between propensity-matched groups. Data used was from the VHA’s Corporate Data Warehouse.VHA patients with diabetes,n =7214 in the treatment group who received HT services, andn =1,067,138 in the control group who did not receive HT services.Emergency department (ED) visits, all-cause hospitalization, and hospitalizations for ambulatory care sensitive conditions (ACSCs).In the baseline period, patients in our sample had a mean age of 67 years old (SD=11 years), were 97% male, and 78% had a hemoglobin A1c (HbA1c) < 8%. The increase in HT use was associated with a net increase of ED visits per patient (0.215 95% CI [0.152, 0.279]), all-cause hospitalization (0.053 95% CI [0.032, 0.074]), and ACSC hospitalization (0.032 95% CI [0.019, 0.045]).Expanding HT or remote monitoring services may lead to additional needs being identified for patients, including increased access to in-person care, such as ED or hospital services.Design: Home telehealth (HT) services have rapidly expanded in the Veterans Health Administration (VHA), but little is known about the real-world impact of the expansion of these services on utilization.To evaluate the impact of expanding HT diabetes services in VHA on high-cost utilization.This cohort study used cross-temporal propensity score matching to identify patients with diabetes who would receive HT services (treatment group) with program expansion (treatment group) with a comparison group of patients with diabetes who did not receive HT services (control group) between 2010 and 2018. A difference-in-differences design was used to compare pre-post changes in high-cost utilization between propensity-matched groups. Data used was from the VHA’s Corporate Data Warehouse.VHA patients with diabetes,n =7214 in the treatment group who received HT services, andn =1,067,138 in the control group who did not receive HT services.Emergency department (ED) visits, all-cause hospitalization, and hospitalizations for ambulatory care sensitive conditions (ACSCs).In the baseline period, patients in our sample had a mean age of 67 years old (SD=11 years), were 97% male, and 78% had a hemoglobin A1c (HbA1c) < 8%. The increase in HT use was associated with a net increase of ED visits per patient (0.215 95% CI [0.152, 0.279]), all-cause hospitalization (0.053 95% CI [0.032, 0.074]), and ACSC hospitalization (0.032 95% CI [0.019, 0.045]).Expanding HT or remote monitoring services may lead to additional needs being identified for patients, including increased access to in-person care, such as ED or hospital services.Participants: Home telehealth (HT) services have rapidly expanded in the Veterans Health Administration (VHA), but little is known about the real-world impact of the expansion of these services on utilization.To evaluate the impact of expanding HT diabetes services in VHA on high-cost utilization.This cohort study used cross-temporal propensity score matching to identify patients with diabetes who would receive HT services (treatment group) with program expansion (treatment group) with a comparison group of patients with diabetes who did not receive HT services (control group) between 2010 and 2018. A difference-in-differences design was used to compare pre-post changes in high-cost utilization between propensity-matched groups. Data used was from the VHA’s Corporate Data Warehouse.VHA patients with diabetes,n =7214 in the treatment group who received HT services, andn =1,067,138 in the control group who did not receive HT services.Emergency department (ED) visits, all-cause hospitalization, and hospitalizations for ambulatory care sensitive conditions (ACSCs).In the baseline period, patients in our sample had a mean age of 67 years old (SD=11 years), were 97% male, and 78% had a hemoglobin A1c (HbA1c) < 8%. The increase in HT use was associated with a net increase of ED visits per patient (0.215 95% CI [0.152, 0.279]), all-cause hospitalization (0.053 95% CI [0.032, 0.074]), and ACSC hospitalization (0.032 95% CI [0.019, 0.045]).Expanding HT or remote monitoring services may lead to additional needs being identified for patients, including increased access to in-person care, such as ED or hospital services.Main Measure(s): Home telehealth (HT) services have rapidly expanded in the Veterans Health Administration (VHA), but little is known about the real-world impact of the expansion of these services on utilization.To evaluate the impact of expanding HT diabetes services in VHA on high-cost utilization.This cohort study used cross-temporal propensity score matching to identify patients with diabetes who would receive HT services (treatment group) with program expansion (treatment group) with a comparison group of patients with diabetes who did not receive HT services (control group) between 2010 and 2018. A difference-in-differences design was used to compare pre-post changes in high-cost utilization between propensity-matched groups. Data used was from the VHA’s Corporate Data Warehouse.VHA patients with diabetes,n =7214 in the treatment group who received HT services, andn =1,067,138 in the control group who did not receive HT services.Emergency department (ED) visits, all-cause hospitalization, and hospitalizations for ambulatory care sensitive conditions (ACSCs).In the baseline period, patients in our sample had a mean age of 67 years old (SD=11 years), were 97% male, and 78% had a hemoglobin A1c (HbA1c) < 8%. The increase in HT use was associated with a net increase of ED visits per patient (0.215 95% CI [0.152, 0.279]), all-cause hospitalization (0.053 95% CI [0.032, 0.074]), and ACSC hospitalization (0.032 95% CI [0.019, 0.045]).Expanding HT or remote monitoring services may lead to additional needs being identified for patients, including increased access to in-person care, such as ED or hospital services.Key Results: Home telehealth (HT) services have rapidly expanded in the Veterans Health Administration (VHA), but little is known about the real-world impact of the expansion of these services on utilization.To evaluate the impact of expanding HT diabetes services in VHA on high-cost utilization.This cohort study used cross-temporal propensity score matching to identify patients with diabetes who would receive HT services (treatment group) with program expansion (treatment group) with a comparison group of patients with diabetes who did not receive HT services (control group) between 2010 and 2018. A difference-in-differences design was used to compare pre-post changes in high-cost utilization between propensity-matched groups. Data used was from the VHA’s Corporate Data Warehouse.VHA patients with diabetes,n =7214 in the treatment group who received HT services, andn =1,067,138 in the control group who did not receive HT services.Emergency department (ED) visits, all-cause hospitalization, and hospitalizations for ambulatory care sensitive conditions (ACSCs).In the baseline period, patients in our sample had a mean age of 67 years old (SD=11 years), were 97% male, and 78% had a hemoglobin A1c (HbA1c) < 8%. The increase in HT use was associated with a net increase of ED visits per patient (0.215 95% CI [0.152, 0.279]), all-cause hospitalization (0.053 95% CI [0.032, 0.074]), and ACSC hospitalization (0.032 95% CI [0.019, 0.045]).Expanding HT or remote monitoring services may lead to additional needs being identified for patients, including increased access to in-person care, such as ED or hospital services.Conclusions: Home telehealth (HT) services have rapidly expanded in the Veterans Health Administration (VHA), but little is known about the real-world impact of the expansion of these services on utilization.To evaluate the impact of expanding HT diabetes services in VHA on high-cost utilization.This cohort study used cross-temporal propensity score matching to identify patients with diabetes who would receive HT services (treatment group) with program expansion (treatment group) with a comparison group of patients with diabetes who did not receive HT services (control group) between 2010 and 2018. A difference-in-differences design was used to compare pre-post changes in high-cost utilization between propensity-matched groups. Data used was from the VHA’s Corporate Data Warehouse.VHA patients with diabetes,n =7214 in the treatment group who received HT services, andn =1,067,138 in the control group who did not receive HT services.Emergency department (ED) visits, all-cause hospitalization, and hospitalizations for ambulatory care sensitive conditions (ACSCs).In the baseline period, patients in our sample had a mean age of 67 years old (SD=11 years), were 97% male, and 78% had a hemoglobin A1c (HbA1c) < 8%. The increase in HT use was associated with a net increase of ED visits per patient (0.215 95% CI [0.152, 0.279]), all-cause hospitalization (0.053 95% CI [0.032, 0.074]), and ACSC hospitalization (0.032 95% CI [0.019, 0.045]).Expanding HT or remote monitoring services may lead to additional needs being identified for patients, including increased access to in-person care, such as ED or hospital services. [ABSTRACT FROM AUTHOR]- Published
- 2024
- Full Text
- View/download PDF
6. Saturation oxygenation pressure index: a non-invasive bedside measure for severity of respiratory disease in neonates on CPAP.
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Thandaveshwara, Deepti, Chandrashekar Reddy, Ashok Huduguru, Gopalakrishna, Manjunath Vaddamabal, and Doreswamy, Srinivasa Murthy
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NEWBORN infants , *CONTINUOUS positive airway pressure , *RESPIRATORY diseases , *PSYCHOLOGICAL distress , *RANK correlation (Statistics) - Abstract
The treatment of respiratory distress in neonates ranges from non-invasive continuous positive airway pressure (CPAP) to advanced invasive mechanical ventilation. Monitoring on CPAP is often done by calculating oxygenation after blood gas analysis which is an invasive procedure. Saturation oxygen pressure index (SOPI) is a simple, non-invasive, bedside tool to monitor the severity of respiratory illness in neonates on CPAP. This study was aimed at validation of SOP index against AaDO2 and determine the cut-off values of SOPI for A-aDO2 of 70, 85 and100. This was a prospective observational study on 126 neonates with respiratory distress and treated with CPAP. The correlation between SOPI and A-aDO2 was validated using Bootstrap method. There was a significant positive correlation between SOPI and A-aDO2 with the Spearman correlation coefficient (rho) being 0.815 (p = 0). The mean coefficient of correlation after Bootstrap was 0.827 (p value < 0.0001). SOPI values of 1.52, 1.57 and 1.6 predicted A-aDO2 value of 70, 85 and 100 with a sensitivity of above 80% and specificity above 90%, respectively. Conclusion: SOPI has a significant positive correlation of 82.7% against A-aDO2 and can be a valuable tool to assess respiratory distress in neonates without arterial blood gas. What is Known: • Saturation oxygen pressure index (SOPI) is a non-invasive monitoring tool for neonates on N-CPAP. • SOPI has a good correlation with AaDO2. What is New: • Correlation of SOPI with AaDO2 is now validated. • Values between 1.52 and 1.88 indicate clinically useful range of AaDO2 for escalation of respiratory support from CPAP. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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7. Nationwide Use of Telehealth Among Commercially Insured Individuals 2007–2017.
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Marcotte, Leah M., Reddy, Ashok, Zhou, Lingmei, and Liao, Joshua M.
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RURAL health clinics , *TELEMEDICINE , *COMMUNITY mental health services , *PREFERRED provider organizations (Medical care) - Abstract
We assessed telehealth services using the GT modifier (indicating use of an interactive audio and video telecommunication system) to Current Procedural Terminology codes 99201-99205 (new patient visits), 99211-99215 (return patient visits), and 99241-99245 (consultant visits). RESULTS Our sample consisted of 47,911 patients receiving 80,360 telehealth visits between 2007 and 2017 (averaging 1.7 visits per patient). Telehealth use increased from 321 patients and 859 total telehealth visits in 2007 to 14,031 patients and 22,927 visits in 2017 (Table 1). [Extracted from the article]
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- 2022
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8. Association of the Implementation of the Patient-Centered Medical Home with Quality of Life in Patients with Multimorbidity.
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Schuttner, Linnaea, Reddy, Ashok, Rosland, Ann-Marie, Nelson, Karin, and Wong, Edwin S.
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PATIENT-centered medical homes , *HEALTH services administration , *GENERALIZED estimating equations , *HEALTH care teams , *COMORBIDITY , *RESEARCH , *RESEARCH methodology , *RETROSPECTIVE studies , *PATIENT-centered care , *MEDICAL cooperation , *EVALUATION research , *COMPARATIVE studies , *QUALITY of life - Abstract
Background: The patient-centered medical home (PCMH) has clinical benefits for chronic disease care, but the association with patient-reported outcomes such as health-related quality of life (HRQoL) is unexplored in patients with multimorbidity (two or more chronic diseases).Objective: To examine if greater clinic-level PCMH implementation was associated with higher HRQoL in multimorbid adults.Design: A retrospective cohort study.Participants: Twenty-two thousand ninety-five multimorbid patients who received primary care at 944 Veterans Health Administration (VHA) clinics.Main Measures: Our exposure was the Patient Aligned Care Team Implementation Progress Index (PI2) for the clinic in 2012, a previously validated composite measure of PCMH implementation. Higher PI2 scores indicate better performance within eight PCMH domains. Outcomes were patient-reported HRQoL measured by the physical and mental component scores (PCS and MCS) from the Short Form-12 patient experiences survey in 2013-2014. Interaction of the outcomes with total hospitalizations and primary care visit count was also examined. Generalized estimating equations were used for main models after adjusting for patient and clinic characteristics.Results: The cohort average age was 68 years, mostly male (96%), and had an average of 4.4 chronic diagnoses. Compared with patients seen at the lowest scoring clinics for PCMH implementation, care in the highest scoring clinics was associated with a higher adjusted marginal mean PCS (42.3 (95% CI 41.3-43.4) versus 40.3 (95% CI 39.1-41.5), P = 0.01), but a lower MCS (35.2 (95% CI 34.4-36.1) versus 36.0 (95% CI 35.3-36.8), P = 0.17). Patients with prior hospitalizations seen in clinics with higher compared with lower PI2 scores had a 2.7 point greater MCS (95% CI 0.6-4.8; P = 0.01).Conclusions: Multimorbid patients seen in clinics with greater PCMH implementation reported higher physical HRQoL, but lower mental HRQoL. The association between PCMH implementation and mental HRQoL may depend on complex interactions with disease severity and prior hospitalizations. [ABSTRACT FROM AUTHOR]- Published
- 2020
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- View/download PDF
9. Factors Associated With Primary Care Physician Turnover in the VA.
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Marcotte, Leah M., Maynard, Charles, Reddy, Ashok, Rinne, Seppo T., Sterling, Ryan, Kaboli, Peter J., and Wong, Edwin S.
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SCALE analysis (Psychology) , *STATISTICAL models , *SECONDARY analysis , *DATA analysis , *RESEARCH funding , *PRIMARY health care , *LABOR turnover , *WORK environment , *SCIENTIFIC observation , *INDEPENDENT variables , *LOGISTIC regression analysis , *DESCRIPTIVE statistics , *JOB satisfaction , *LONGITUDINAL method , *ACQUISITION of data , *STATISTICS , *FACTOR analysis , *CONFIDENCE intervals , *HEALTH outcome assessment , *DATA analysis software , *EMPLOYEES' workload , *REGRESSION analysis - Abstract
OBJECTIVES: To quantify the association between primary care team workload satisfaction and primary care physician (PCP) turnover and examine potential mediation of workplace climate factors using survey and administrative data. STUDY DESIGN: Longitudinal observational study using data from 2008 to 2016. METHODS: The outcome variable was PCP turnover. The main explanatory variable was satisfaction with amount of workload. We included 7 additional workplace climate measures (eg, satisfaction with direct supervision) as mediators. We included characteristics of PCPs (eg, PCP years of experience, gender), salary, and clinic factors (eg, urban vs rural geography, community vs hospital based) as covariates. RESULTS: US Department of Veterans Affairs (VA) PCPs working at 787 VA primary care clinics nationally were recruited for this study. Over the 9-year study period, 8362 unique PCPs were employed in the VA. The unadjusted mean quarterly turnover rate was 1.83%, and the mean (SD) workload satisfaction score was 3.58 (0.24) on a 5-point Likert scale over the study period. In adjusted analysis, a 1-point increase in workload satisfaction was associated with a decrease of 0.73 (95% CI, 0.36-1.10) percentage points in the probability of turnover in a calendar quarter. In the mediation analysis, we found that workload satisfaction impacted turnover through only 1 of the 7 workplace climate measures: satisfaction with direction by senior managers. CONCLUSIONS: Our study findings highlight the key role that achieving primary care workload satisfaction can play in reducing PCP turnover. Identification of direction by senior managers as an underlying mechanism is an important finding for strategic planning to mitigate PCP turnover. [ABSTRACT FROM AUTHOR]
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- 2024
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10. Use of Chronic Care Management Among Primary Care Clinicians.
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Reddy, Ashok, Marcotte, Leah M., Lingmei Zhou, Fihn, Stephan D., Liao, Joshua M., and Zhou, Lingmei
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PRIMARY care , *MEDICARE , *MEDICAL care , *DISEASE management - Abstract
The Centers for Medicare and Medicade Services (CMS) initiated chronic care management (CCM) codes to reimburse clinicians for coordination activities, but little is known about uptake over time. We find that primary care clinicians drove increasing use over 4 years-a trend that may reflect either new coordination activities or new reimbursements for existing activities. That 5% of chronic care management was denied by Medicare underscores the need for future work evaluating facilitators and barriers to use. Such insight is especially vital given the large number of eligible beneficiaries that have not received chronic care management to date, as well as the limited number of clinicians who currently deliver these services. [ABSTRACT FROM AUTHOR]
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- 2020
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11. Necrotising Scleritis following Pars Plana Vitrectomy.
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Baharani, Abhilasha, Reddy, Ashok Kumar, and Reddy P., Raja Rami
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PARS plana , *ASPERGILLUS flavus , *VITRECTOMY , *SCLERITIS , *POSTOPERATIVE period , *ITRACONAZOLE , *IRIDOCYCLITIS , *RETINAL detachment - Abstract
Purpose: To report a case of fungal necrotising scleritis following pars plana vitrectomy. Results: A 65-year-old lady underwent phacoemlsificication with posterior capsular rupture and posteriorly dislocated lens in her left eye. On the same day she underwent 20 gauge pars plana vitrectomy and phacofragmentation. Postoperative period was uneventful for up to 6 weeks when she developed necrotising anterior scleritis with suppurative nodules. Scraping from the suppuration confirmed the presence of Aspergillus flavus. She was treated with topical Voriconazole and oral Itraconazole. Conclusion: We describe the first case of fungal necrotising scleritis without intraocular inflammation following pars plana vitrectomy (PubMed Search). Infection should be kept in the differential diagnosis of post-operative necrotising scleritis even in the absence of risk factors like hypopyon or diabetes. Early recognition improves final outcome. Medical therapy should be continued even after presumed cure to take care of residual fungi and prevent recurrences. [ABSTRACT FROM AUTHOR]- Published
- 2020
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12. Association between Continuity and Team-Based Care and Health Care Utilization: An Observational Study of Medicare-Eligible Veterans in VA Patient Aligned Care Team.
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Reddy, Ashok, Wong, Edwin, Canamucio, Anne, Nelson, Karin, Fihn, Stephan D., Yoon, Jean, and Werner, Rachel M.
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HOSPITAL care , *MEDICAL care , *COMORBIDITY , *EPIDEMIOLOGY , *AGE distribution , *OUTPATIENT medical care , *COMPARATIVE studies , *CONTINUUM of care , *HEALTH care teams , *HOSPITAL emergency services , *RESEARCH methodology , *MEDICAL cooperation , *MEDICARE , *POPULATION , *RESEARCH , *RESEARCH funding , *SEX distribution , *SOCIOECONOMIC factors , *EVALUATION research , *RETROSPECTIVE studies , *PATIENT-centered care , *PATIENTS' attitudes - Abstract
Objective: It remains unknown whether high-functioning teams can compensate for poor continuity of care to support important patient outcomes.Data Source: Linked VA administrative and Medicare claims data to measure the relationship of team-based care and continuity of care with high-cost utilization.Study Design: Retrospective cohort study of 1.2 million VA-Medicare dual eligible Veterans assigned to a VA primary care provider (PCP) in 2012. Continuity was the proportion of primary care visits to the assigned VA provider of care. Clinics were categorized as low, average, or high-team functioning based on survey data. Our primary outcomes were the number of all-cause hospitalizations, ambulatory care sensitive (ACSC) hospitalizations, and emergency department (ED) visits in 2013.Principal Findings: A 10-percentage point increase in continuity with a VA PCP was associated with 4.5 fewer hospitalizations (p < .001), 3.2 fewer ACSC hospitalizations (p < .001), and 2.6 more ED visits (p = .07) per 1,000 patients. Team-based care was not significantly associated with any high-cost utilization category. Associations were heterogeneous across VA-reliant and nonreliant Veterans. Finally, the interaction results demonstrated that the quality of team-based care functioning could not compensate for poor continuity on hospitalizations, ACSC hospitalizations, or ED visits.Conclusions: In Veterans who were reliant on the VA for services, increasing continuity with a VA PCP and high-functioning team-based care clinics was associated with fewer ED visits and hospitalizations. Furthermore, leveraging combined data from VA and Medicare allowed to better measure continuity and assess high-cost utilization among Veterans who are and are not reliant on the VA for services. [ABSTRACT FROM AUTHOR]- Published
- 2018
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13. Bladder Recovery Patterns in Patients with Complete Cauda Equina Syndrome: A Single- Center Study.
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Reddy, Ashok Pedabelle, Mahajan, Rajat, Rustagi, Tarush, and Chhabra, Harvinder Singh
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Study Design: Retrospective case series. Purpose: Cauda equina syndrome (CES) is associated with etiologies such as lumbar disc herniation (LDH) and lumbar canal stenosis (LCS). CES has a prevalence of 2% among patients with LDH and exhibits variable outcomes, even with early surgery. Few studies have explored the factors influencing the prognosis in terms of bladder function. Therefore, we aimed to assess the factors contributing to bladder recovery and propose a simplified bladder recovery classification. Overview of Literature: Few reports have described the prognostic clinical factors for bladder recovery following CES. Moreover, limited data are available regarding a meaningful bladder recovery status classification useful in clinical settings. Methods: A single-center retrospective study was conducted (April 2012 to April 2015). Patients with CES secondary to LDH or LCS were included. The retrieved data were evaluated for variables such as demographics, symptom duration, neurological symptoms, bladder symptoms, and surgery duration. The variable bladder function outcome during discharge and at follow-up was recorded. All subjects were followed up for at least 2 years. A simplified bladder recovery classification was proposed. Statistical analyses were performed to study the correlation between patient variables and bladder function outcome. Results: Overall, 39 patients were included in the study. Majority of the subjects were males (79.8%) with an average age of 44.4 years. CES secondary to LDH was most commonly seen (89.7%). Perianal sensation (PAS) showed a significant correlation with neurological recovery. In the absence of PAS, bladder function did not recover. Voluntary anal contraction (VAC) was affected in all study subjects. Conclusions: Intactness of PAS was the only significant prognostic variable. Decreased or absent VAC was the most sensitive diagnostic marker of CES. We also proposed a simplified bladder recovery classification for recovery prognosis. [ABSTRACT FROM AUTHOR]
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- 2018
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14. Risk Stratification Methods and Provision of Care Management Services in Comprehensive Primary Care Initiative Practices.
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Reddy, Ashok, Sessums, Laura, Gupta, Reshma, Jin, Janel, Day, Tim, Finke, Bruce, and Bitton, Asaf
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PRIMARY care , *GENERAL practitioners , *PATIENTS , *MEDICAL care standards , *MEDICAL care , *MEDICAL quality control , *PRIMARY health care , *QUALITATIVE research , *RISK management in business , *MEDICAL offices , *OFFICE management , *STANDARDS ,POPULATION health management ,RISK management in the health care industry - Abstract
Purpose: Risk-stratified care management is essential to improving population health in primary care settings, but evidence is limited on the type of risk stratification method and its association with care management services.Methods: We describe risk stratification patterns and association with care management services for primary care practices in the Comprehensive Primary Care (CPC) initiative. We undertook a qualitative approach to categorize risk stratification methods being used by CPC practices and tested whether these stratification methods were associated with delivery of care management services.Results: CPC practices reported using 4 primary methods to stratify risk for their patient populations: a practice-developed algorithm (n = 215), the American Academy of Family Physicians' clinical algorithm (n = 155), payer claims and electronic health records (n = 62), and clinical intuition (n = 52). CPC practices using practice-developed algorithm identified the most number of high-risk patients per primary care physician (282 patients, P = .006). CPC practices using clinical intuition had the most high-risk patients in care management and a greater proportion of high-risk patients receiving care management per primary care physician (91 patients and 48%, P =.036 and P =.128, respectively).Conclusions: CPC practices used 4 primary methods to identify high-risk patients. Although practices that developed their own algorithm identified the greatest number of high-risk patients, practices that used clinical intuition connected the greatest proportion of patients to care management services. [ABSTRACT FROM AUTHOR]- Published
- 2017
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15. Patient and Partner Feedback Reports to Improve Statin Medication Adherence: A Randomized Control Trial.
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Reddy, Ashok, Huseman, Tiffany, Canamucio, Anne, Marcus, Steven, Asch, David, Volpp, Kevin, Long, Judith, Huseman, Tiffany L, Marcus, Steven C, Asch, David A, and Long, Judith A
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STATINS (Cardiovascular agents) , *ANTICHOLESTEREMIC agents , *PATIENT compliance , *MEDICAL cooperation , *RANDOMIZED controlled trials , *ANTILIPEMIC agents , *COMPARATIVE studies , *CORONARY disease , *DRUGS , *DRUG packaging , *LOW density lipoproteins , *RESEARCH methodology , *RESEARCH , *SOCIAL support , *EVALUATION research , *HEALTH care reminder systems - Abstract
Background: Simple nudges such as reminders and feedback reports to either a patient or a partner may facilitate improved medication adherence.Objective: To test the impact of a pill bottle used to monitor adherence, deliver a daily alarm, and generate weekly medication adherence feedback reports on statin adherence.Design: Three-month, three-arm randomized clinical trial (ClinicalTrials.gov identifier: NCT02480530).Participants: One hundred and twenty-six veterans with known coronary artery disease and poor adherence (medication possession ratio <80 %).Intervention: Patients were randomized to one of three groups: (1) a control group (n = 36) that received a pill-monitoring device with no alarms or feedback; (2) an individual feedback group (n = 36) that received a daily alarm and a weekly medication adherence feedback report; and (3) a partner feedback group (n = 54) that received an alarm and a weekly feedback report that was shared with a friend, family member, or a peer. The intervention continued for 3 months, and participants were followed for an additional 3 months after the intervention period.Main Measures: Adherence as measured by pill bottle. Secondary outcomes included change in LDL (mg/dl), patient activation, and social support.Key Results: During the 3-month intervention period, medication adherence was higher in both feedback arms than in the control arm (individual feedback group 89 %, partner feedback group 86 %, control group 67 %; p < 0.001 and = 0.001). At 6 months, there was no difference in medication adherence between either of the feedback groups and the control (individual feedback 60 %, partner feedback 52 %, control group 54 %; p = 0.75 and 0.97).Conclusions: Daily alarms combined with individual or partner feedback reports improved statin medication adherence. While neither an individual feedback nor partner feedback strategy created a sustainable medication adherence habit, the intervention itself is relatively easy to implement and low cost. [ABSTRACT FROM AUTHOR]- Published
- 2017
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16. Addressing Avoidable Healthcare Costs: Time to Cool Off on Hotspotting in Primary Care?
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Marcotte, Leah M., Reddy, Ashok, and Liao, Joshua
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PRIMARY care , *PREVENTIVE medicine , *COST control , *MEDICAL care , *MEDICAL economics - Abstract
One increasingly popular strategy for addressing avoidable healthcare costs is to couple "hotspotting" with interventions that deliver expanded, more intense primary care services to high-cost patient populations. While there is rationale for such intensive primary care programs, early results have been lackluster. Geoffrey Rose's preventive medicine strategy provides insight about a potential explanation: that the narrow scope of these initiatives on small groups of high-cost patients may inherently prevent them from achieving overall cost reductions across entire patient populations. While additional work and results from innovative non-healthcare-based interventions are needed, healthcare organizations may benefit from instead investing in broader interventions that impact patients across cost levels, including average- or low-cost patients. [ABSTRACT FROM AUTHOR]
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- 2019
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17. The VA MISSION Act - Creating a Center for Innovation within the VA.
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Reddy, Ashok, Fihn, Stephan D., and Liao, Joshua M.
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MENTAL health services , *MEDICAID - Abstract
The article offers information on the signing of the VA Maintaining Internal Systems and Strengthening Integrated Outside Networks (MISSION) Act, on June 6, 2018. It discussed the goal to improving care for veterans served by the Department of Veterans Affairs (VA) health care system; and developing innovative approaches to testing payment and service delivery models in order to reduce expenditures.
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- 2019
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18. Proteomic analysis of cervical vaginal fluid proteins among women in recurrent preterm labor.
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Lo, Jamie O., Reddy, Ashok P., Wilmarth, Phillip A., Roberts, Victoria H. J., Kinhnarath, Amanda, Snyder, Janice, Rincon, Monica P., Gravett, Michael G., Nagalla, Srinivasa R., and Pereira, Leonardo M.
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PROTEOMICS , *PREMATURE labor , *BIOMARKERS , *ENZYME-linked immunosorbent assay , *MASS spectrometry - Abstract
Objective: Proteomic analysis of four cervical-vaginal fluid (CVF) proteins to identify biomarkers of recurrent preterm birth (rPTB) in at-risk women prior to onset of preterm labor. Methods: Nested case control study from 2007 to 2011 of women with prior spontaneous preterm birth(s) (PTB) who underwent serial CVF sampling. Mass spectrometry analysis was used and ELISA analysis was performed to validate candidates. Results: 108 patients were enrolled and 10 cases and 20 gestational age matched controls were analyzed after exclusions. Of 748 CVF proteins identified, 72 had statistically significant (p<0.05) expression differences and 38 were highly differentially expressed (p<0.01). Four candidate proteins were abundant and involved in immune/inflammatory response, but ELISA analysis did not confirm altered expression patterns. Conclusion: The lack of confirmation of potential biomarkers identified by mass spectrometry and ELISA demonstrates the challenges of validating PTB biomarkers and suggests that a panel of biomarkers would improve the predictive value of CVF testing. [ABSTRACT FROM AUTHOR]
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- 2014
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19. Neonatal Meningitis by Multidrug Resistant Elizabethkingia meningosepticum Identified by 16S Ribosomal RNA Gene Sequencing.
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Shailaja, V. V., Reddy, Ashok Kumar, Alimelu, M., and Sadanand, L. N. R.
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MENINGITIS , *MULTIDRUG resistance in bacteria , *RIBOSOMAL RNA , *RNA sequencing , *NUCLEOTIDE sequence , *AMINOGLYCOSIDES , *CEPHALOSPORINS - Abstract
Clinical and microbiological profile of 9 neonates with meningitis by Elizabethkingia meningosepticum identified by 16S ribosomal gene sequencing was studied. All the clinical isolates were resistant to cephalosporins, aminoglycosides, trimethoprimsulfamethoxazole, -lactam combinations, carbapenems and only one isolate was susceptible to ciprofloxacin. All the isolates were susceptible to vancomycin. Six of nine neonates died even after using vancomycin, based on susceptibility results. E. meningosepticum meningitis in neonates results in high mortality rate. Though the organism is susceptible to vancomycin in vitro, its efficacy in vivo is questionable and it is difficult to determine the most appropriate antibiotic for treating E. meningosepticum meningitis in neonates. [ABSTRACT FROM AUTHOR]
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- 2014
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20. In Vitro Antibiotic Susceptibility of Rapidly Growing Nontuberculous Mycobacteria Isolated from Patients with Microbial Keratitis.
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Reddy, Ashok Kumar, Garg, Prashant, Babu, K. Hari, Gopinathan, Usha, and Sharma, Savitri
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INHIBITORY Concentration 50 , *MYCOBACTERIA , *EFFECT of antibiotics on microorganisms , *ANTIBACTERIAL agents , *TOBRAMYCIN - Abstract
Purpose: This study was undertaken to determine the antibiotic susceptibility and minimum inhibitory concentrations (MIC) of amikacin, tobramycin, ciprofloxacin, gatifloxacin, azithromycin, and clarithromycin against rapidly growing nontuberculous mycobacteria isolated from patients with keratitis. Methods: A total of 15 rapidly growing nontuberculous mycobacteria isolated from corneal scrapings of keratitis patients from January 1999 through December 2007 were subjected to antimicrobial susceptibility testing by the E-Test to amikacin, tobramycin, ciprofloxacin, gatifloxacin, azithromycin, and clarithromycin. Results: Out of 15 isolates, 13 were identified as Mycobacterium chelonae complex and 2 as Mycobacterium fortuitum complex. Based on minimum inhibitory concentration (MIC) cut off, all 15 (100%) isolates were sensitive to amikacin, azithromycin, and clarithromycin, 13 (86%) were sensitive to tobramycin, nine (60%) to gatifloxacin, and only 6 (40%) to ciprofloxacin. The MIC range was 0.25–4 µg/ml for amikacin, 0.5–1 µg/ml for azithromycin, 0.125–1 µg/ml for clarithromycin, 0.5–16 µg/ml for ciprofloxacin, and 0.25–16 µg/ml for tobramycin. MIC90 for amikacin was 2 µg/ml, azithromycin 1 µg/ml, clarithromycin 0.75 µg/ml, ciprofloxacin 8 µg/ml, gatifloxacin 8 µg/ml, and for tobramycin it was 4 µg/ml. Conclusions: All the isolates were sensitive to amikacin, azithromycin, and clarithromycin, but the MIC values of clarithromycin and azithromycin were lower than amikacin. Based on in vitro susceptibility results it appears that the topical amikacin in combination with oral clarithromycin or azithromycin is the best treatment option for rapidly growing nontuberculous mycobacterial keratitis. [ABSTRACT FROM AUTHOR]
- Published
- 2010
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21. Fungal keratitis due to Schizophyllum commune: an emerging pathogenic fungus.
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Reddy, Ashok Kumar, Ashok, Rangaiahgari, Majety, Madhavi, Chitta, Megharaj, and Narayen, Nitesh
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FUNGAL keratitis , *SCHIZOPHYLLUM commune , *PATHOGENIC fungi , *FUNGAL phylogeny , *FUNGAL colonies , *THERAPEUTICS - Abstract
Fungal keratitis due to Schizophyllum commune is very rare. In this study, we report the clinical and microbiological profile of five patients with fungal keratitis due to S. commune. Direct microscopic examination of corneal scrapings from all five patients showed septate branching hyaline fungal filaments. Similarly, in all five patients Sabouraud dextrose agar ( SDA) plates inoculated with corneal scrapings showed white, cottony colonies on the second day of incubation. Lactophenol cotton blue stained wet preparation of 7-day-old colonies on SDA revealed clamp connections and no spores. The fungus was identified by its characteristic clamp connections, fan-shaped bracket fruiting body with pinkish-grey longitudinally split-radiating gills. The phenotypic identification of one of the five isolates further conformed by ITS sequencing. Treatment outcome was available for two of the five patients; in these two patients, the keratitis resolved with topical natamycin. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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22. Evaluating equity in a national virtual care management intervention: Delivery and outcomes by race/ethnicity among Veterans with hypertension and diabetes.
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Marcotte, Leah M., Wheat, Chelle L., Rao, Mayuree, Wong, Edwin S., Hebert, Paul, Nelson, Karin, Rojas, Jorge, Gunnink, Eric J., and Reddy, Ashok
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Objective: To evaluate whether the Preventive Health Inventory (PHI)—a virtual care management intervention addressing hypertension and diabetes management implemented nationally in the Veterans Health Administration (VHA)—was delivered equitably among racial/ethnic groups and if existing inequities in hypertension and diabetes outcomes changed following PHI receipt. Data Sources and Study Setting: We used data from the VHA Corporate Data Warehouse among Veterans enrolled in primary care nationally from February 28, 2021 to March 31, 2022. Study Design: We used logistic regression to evaluate PHI receipt and hypertension and diabetes outcomes after PHI implementation among Veterans with hypertension and/or diabetes. We conducted unadjusted analyses and analyses adjusting for clinic fixed effects using dummy variables. Data Collection/Extraction Methods: We identified Veterans engaged in primary care with documented race/ethnicity and hypertension and/or diabetes diagnoses in all months during the study period. Principle Findings: Prior to PHI, Non‐Hispanic Black (NHB) (42.2%) and Hispanic (39.5%) Veterans were less likely to have controlled hypertension vs. Non‐Hispanic White (NHW) Veterans (47.5%); NHB Veterans (32.9%) were more likely to have uncontrolled diabetes vs. NHW Veterans (25.1%). Among 1,805,658 Veterans, 5.7% NHW (N = 68,744), 5.6% NHB (N = 22,580), 10.2% Hispanic (N = 13,313), 6.2% Asian/Pacific Islander/Native Hawaiian (N = 1868), 5.1% American Indian/Native Alaskan (N = 744), and 5.6% multiple races or other race (N = 1647) Veterans received PHI. We found no significant racial inequities in PHI receipt in unadjusted and adjusted models. Hypertension and diabetes measures improved more in the intervention group compared with the group who did not receive the intervention. There were no new or worsened inequities after PHI, and in pre‐/post‐intervention analysis, among NHB Veterans, the inequity in uncontrolled diabetes improved by 1.9 percentage points (95% CI 0.2, 3.6). Conclusions: Our findings suggest the PHI intervention was equitably deployed across race/ethnicity groups without significantly impacting most existing inequities in diabetes and hypertension. [ABSTRACT FROM AUTHOR]
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- 2024
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23. Evaluation of the intraosseous and extraosseous blood supply...
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Reddy, Ashok S. and Frederick, Robert W.
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BLOOD circulation , *FEMUR - Abstract
Provides information on study regarding the extraosseous and intraosseous blood supply to the femoral condyles. Materials and methodology of the study; Results of the study; Discussion of the results.
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- 1998
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24. Identifying Patterns of Primary Care In-Person and Telemedicine Use in the Veterans Health Administration: A Latent Class Analysis.
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Staloff, Jonathan, Gunnink, Eric, Rojas Jr., Jorge, Wong, Edwin S., Nelson, Karin, and Reddy, Ashok
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ACCESS to primary care , *COVID-19 pandemic , *VETERANS' health , *PRIMARY care , *INTERNET speed - Abstract
Background: The Veterans Health Administration increased synchronous telemedicine (video and telephone visits) in primary care in response to the COVID-19 pandemic. Objective: Our objective was to determine veteran use patterns of in-person and telemedicine primary care when all modalities were available. Design: A retrospective cohort analysis. We performed a latent class analysis of primary care visits over a 1-year period to identify veteran subgroup (i.e., class) membership based on amount of primary care use and modality used. Then, we used multinomial logistic regression with a categorical outcome to identify patient characteristics associated with class identification. Participants: A random national sample consisting of 564,580 primary care empaneled veterans in June 2021. Main Measures: Latent class membership. Key Results: We identified three latent classes: those with few primary care visits that were predominantly telephone-based (45%), intermediate number of visits of all modalities (50%), and many visits of all modalities (5%). In an adjusted model, characteristics associated with the "few" visits class, compared to the intermediate class, were older age, male sex, White race, further driving distance to primary care, higher Gagne, optimal internet speed, and unmarried status (OR 1.002, 1.52, 1.13, 1.004, 1.04, 1.05, 1.06, respectively; p <.05). Characteristics associated with membership in the "many" visits class, compared to the intermediate class, were Hispanic race, higher JEN Frailty Index and Gagne (OR 1.12, 1.11, 1.02, respectively; p <.05), and higher comorbidity by Care Assessment Need score quartile (Q2 1.73, Q3 2.80, Q4 4.12; p < 0.05). Conclusions: Veterans accessing primary care in-person or via telemedicine do so primarily in three ways: (1) few visits, predominantly telephone; (2) intermediate visits, all modalities, (3) many visits, all modalities. We found no groups of veterans receiving a majority of primary care through video. [ABSTRACT FROM AUTHOR]
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- 2024
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25. Proteomic analysis distinguishes extracellular vesicles produced by cancerous versus healthy pancreatic organoids.
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Buenafe, Abigail C., Dorrell, Craig, Reddy, Ashok P., Klimek, John, and Marks, Daniel L.
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EXTRACELLULAR vesicles , *GEL permeation chromatography , *PROTEOMICS , *ORGANOIDS , *PANCREATIC duct , *ULTRAFILTRATION - Abstract
Extracellular vesicles (EVs) are produced and released by both healthy and malignant cells and bear markers indicative of ongoing biological processes. In the present study we utilized high resolution flow cytometry to detect EVs in the plasma of patients with pancreatic ductal adenocarcinoma (PDAC) and in the supernatants of PDAC and healthy control (HC) pancreatic organoid cultures. Using ultrafiltration and size exclusion chromatography, PDAC and HC pancreatic organoid EVs were isolated for mass spectrometry analysis. Proteomic and functional protein network analysis showed a striking distinction in that EV proteins profiled in pancreatic cancer organoids were involved in vesicular transport and tumorigenesis while EV proteins in healthy organoids were involved in cellular homeostasis. Thus, the most abundant proteins identified in either case represented non-overlapping cellular programs. Tumor-promoting candidates LAMA5, SDCBP and TENA were consistently upregulated in PDAC EVs. Validation of specific markers for PDAC EVs versus healthy pancreatic EVs will provide the biomarkers and enhanced sensitivity necessary to monitor early disease or disease progression, with or without treatment. Moreover, disease-associated changes in EV protein profiles provide an opportunity to investigate alterations in cellular programming with disease progression. [ABSTRACT FROM AUTHOR]
- Published
- 2022
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26. Transcultural Adaptation and Validation of Kannada version of the National Institute of Health Stroke Scale (NIHSS).
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Baby, Priya, PR, Srijithesh, Reddy, Ashok V., Rajasekaran, Aravind K., Philip, Mariamma, Akkunje, Preetie S., and Chaturvedi, Surbhi
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DIAGNOSIS of neurological disorders , *STATISTICS , *STROKE , *RESEARCH methodology evaluation , *RESEARCH methodology , *PSYCHOMETRICS , *INTER-observer reliability , *INTRACLASS correlation , *STROKE patients , *DESCRIPTIVE statistics , *GLASGOW Coma Scale , *BARTHEL Index , *LONGITUDINAL method , *DISEASE complications ,RESEARCH evaluation - Abstract
Background and Purpose: The National Institute of Health Stroke Scale (NIHSS) is widely used in clinical practice to evaluate stroke-related neurological deficits. The aim of this study was to develop Kannada language version of the NIHSS (Ka-NIHSS) and determine its validity and reliability. Materials and Methods: In the first phase of the study, Ka-NIHSS was adapted based on cultural and linguistic peculiarities. In the next phase, 51 acute stroke patients were prospectively enrolled in the study. The concurrent validity of the Ka-NIHSS was evaluated by comparison with the Glasgow Coma Scale (GCS) and the modified Rankin Scale (mRS). The predictive validity was assessed by comparison with Barthel Index (BI) score and mRS at a 90-day telephonic follow-up. The reliability was evaluated using the kappa statistics for inter-rater agreement between two independent raters and intra-class correlation coefficient (ICC) analysis. The inter-rater agreement of videotaped assessment of items 9 and 10 between four independent raters was evaluated using kappa statistics. Results: Ka-NIHSS scores highly correlated with GCS (P = --0.74 P < 0.001) and mRS (P = 0.85, P < 0.001) at baseline. It moderately correlated with mRS (P = 0.67, P < 0.001) and BI (P = --0.64, P < 0.001) at 90 days follow up. Inter-rater reliability was high between the two examiners, with kappa values ranging from 0.66 to 0.95. The inter-rater agreements of the video assessment of items 9 and 10 for nine patients among four raters were 0.81 and 1 respectively. Conclusions: Ka-NIHSS is a valid and reliable tool for assessing neurological deficits in Kannada-speaking stroke patients. [ABSTRACT FROM AUTHOR]
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- 2022
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27. Identifying and Prioritizing Workplace Climate Predictors of Burnout Among VHA Primary Care Physicians.
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Sterling, Ryan, Rinne, Seppo T., Reddy, Ashok, Moldestad, Megan, Kaboli, Peter, Helfrich, Christian D., Henrikson, Nora B., Nelson, Karin M., Kaminetzky, Catherine, and Wong, Edwin S.
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WORK environment , *PSYCHOLOGICAL burnout , *HEALTH care rationing , *PRIMARY care , *VETERANS' health , *DEPERSONALIZATION - Abstract
Objective: Burnout, or job-related stress, affects more than half of all US physicians, with primary care physicians (PCPs) experiencing some of the highest rates in medicine. Our study analyzes national survey data to identify and prioritize workplace climate predictors of burnout among PCPs within a large integrated health system. Design: Observational study of annual survey data from the Veterans Health Administration (VHA) All Employee Survey (AES) for 2013–2017. AES response rate ranged from 56 to 60% during the study period. Independent and dependent variables were measured from separate random samples. In total, 8,456 individual-level responses among PCPs at 110 VHA practice sites were aggregated at the facility level by reporting year. We used the semi-automated LASSO procedure to identify workplace climate measures that were more influential in predicting burnout and assessed relative importance using the Shapely value decomposition. Participants: VHA employees that self-identify as PCPs. Main measures: Dependent variables included two dichotomous measures of burnout: emotional exhaustion and depersonalization. Independent measures included 30 survey measures related to dimensions of workplace climate (e.g., workload, leadership, satisfaction). Results: We identified seven influential workplace climate predictors of emotional exhaustion and nine predictors of depersonalization. With few exceptions, higher agreement/satisfaction scores for predictors were associated with a lower likelihood of burnout. The majority of explained variation in emotional exhaustion was attributable to perceptions of workload (32.6%), organization satisfaction (28.2%), and organization support (19.4%). The majority of explained variation in depersonalization was attributable to workload (25.3%), organization satisfaction (22.9%), and connection to VHA mission (20.7%). Conclusion: Identifying the relative importance of workplace climate is important for the allocation of health organization resources to mitigate and prevent burnout within the PCP workplace. In a context of limited resources, efforts to reduce perceived workload and improve organization satisfaction may represent the biggest leverage points for health organizations to address physician burnout. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
28. A Rare Case of Eosinophilic Myelitis Due to Gnathostomiasis.
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Baskar, Dipti, Nashi, Saraswati, Reddy, Ashok, Vangayalapati, Sriharish, Arshad, Faheem, Srijithesh, P, Kulkarni, Girish, Alladi, Suvarna, Wallop, Pakdee, Ketboonlue, Thawatchai, and Dekumyoy, Paron
- Abstract
Eosinophilic myelitis is an important cause of transverse myelopathy and has to be considered in an appropriate clinical setting. Eosinophilic myelitis due to parasitic infection should be suspected in cases with cerebrospinal fluid (CSF) eosinophilia along with migratory serpiginous skin lesions and recent travel to endemic areas. We report a case with a 1-month history of fever followed by truncal paresthesias, erythematous creeping skin eruptions, and paraparesis with blood and CSF eosinophilia on a background history of consuming undercooked fish. Magnetic resonance imaging (MRI) spine showed long segment T2 hyperintensities with contrast enhancement. He was tested positive for 24kDa antigenic component of Gnathostoma spinigerum in CSF and serum by immunoblot testing. The patient showed significant improvement with parenteral steroids. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
29. Keratitis due to an Unusual Pathogenic Social Amoeba, Dictyostelium polycephalum.
- Author
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Srirampur, Arjun, Reddy, Ashok Kumar, Siva, Swathi, and Kalwad, Anupama
- Published
- 2018
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30. Defining and Improving Outcomes Measurement for Virtual Care: Report from the VHA State-of-the-Art Conference on Virtual Care.
- Author
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Connolly, Samantha L., Sherman, Scott E., Dardashti, Navid, Duran, Elizabeth, Bosworth, Hayden B., Charness, Michael E., Newton, Terry J., Reddy, Ashok, Wong, Edwin S., Zullig, Leah L., and Gutierrez, Jeydith
- Subjects
- *
MEDICAL care , *LITERATURE reviews , *VETERANS' health , *PATIENT monitoring , *PATIENT safety - Abstract
Virtual care, including synchronous and asynchronous telehealth, remote patient monitoring, and the collection and interpretation of patient-generated health data (PGHD), has the potential to transform healthcare delivery and increase access to care. The Veterans Health Administration (VHA) Office of Health Services Research and Development (HSR&D) convened a State-of-the-Art (SOTA) Conference on Virtual Care to identify future virtual care research priorities. Participants were divided into three workgroups focused on virtual care access, engagement, and outcomes. In this article, we report the findings of the Outcomes Workgroup. The group identified virtual care outcome areas with sufficient evidence, areas in need of additional research, and areas that are particularly well-suited to be studied within VHA. Following a rigorous process of literature review and consensus, the group focused on four questions: (1) What outcomes of virtual care should we be measuring and how should we measure them?; (2) how do we choose the "right" care modality for the "right" patient?; (3) what are potential consequences of virtual care on patient safety?; and (4) how can PGHD be used to benefit provider decision-making and patient self-management?. The current article outlines key conclusions that emerged following discussion of these questions, including recommendations for future research. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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- View/download PDF
31. Automated Reminders Enhance Mailed Fecal Immunochemical Test Completion Among Veterans: a Randomized Controlled Trial.
- Author
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Deeds, Stefanie, Schuttner, Linnaea, Wheat, Chelle, Gunnink, Eric, Geyer, John, Beste, Lauren, Chen, Anders, Dominitz, Jason A., Nelson, Karin, and Reddy, Ashok
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- *
RANDOMIZED controlled trials , *FECAL occult blood tests , *TEXT messages , *TELEPHONE calls , *COLORECTAL cancer , *EARLY detection of cancer - Abstract
Background: The Veterans Affairs (VHA) is working to establish a population-based colorectal cancer screening program for average-risk patients using mailed fecal immunochemical testing (FIT). However, low response rates to mailed FIT may hinder success. Key features of mailed FIT programs, including the use of reminders, differ among various national programs, with limited evidence among veterans. Objective: We sought to test whether using reminders, either via telephone call or text message, was effective in improving mailed FIT response rates. Design: We conducted a prospective, randomized quality improvement trial (ClinicalTrials.gov NCT05012007). Veterans who had not returned a FIT within 2 weeks of receiving the kit were randomized to one of three groups: (1) control (no reminder); (2) an automated telephone call reminder; or (3) an automated text message reminder. Participants: A total of 2658 veterans enrolled at VA Puget Sound Health Care System who were aged 45–75 and had an average risk of colorectal cancer. Interventions: A single automated telephone call or text message reminder prompting veterans to return the FIT kit. Main Measures: Our primary outcome was FIT return at 90 days and our secondary outcome was FIT return at 180 days. Key Results: Participant average age was 62 years, 88% were men, and 66% White. At 90 days, both the phone and text reminder interventions had higher FIT return rates compared to control (intention-to-treat results (ITT): control 28%, phone 39%, text 38%; p<0.001). At 180 days, FIT kit return remained higher in the reminder interventions (ITT: control 32%, phone 42%, text 40%; p<0.001). Conclusions: Automated reminders increased colorectal cancer screening completion among average-risk veterans. An automated phone call or text message was equally effective. VHA facilities seeking to implement a mailed FIT program should consider using phone or text reminders, depending on available resources. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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32. From Their Perspective: The Connection between Life Stressors and Health Care Service Use Patterns of Homeless Frequent Users of the Emergency Department.
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Moore, Megan, Conrick, Kelsey M, Reddy, Ashok, Allen, Ann, and Jaffe, Craig
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PSYCHOLOGICAL adaptation , *EMERGENCY medical services , *HOMELESS persons , *INTERVIEWING , *LIFE change events , *RESEARCH methodology , *MEDICAL needs assessment , *MEDICAL records , *SELF-evaluation , *PSYCHOLOGICAL stress , *URBAN hospitals , *QUALITATIVE research , *JUDGMENT sampling , *PSYCHOSOCIAL factors , *SOCIOECONOMIC factors , *THEMATIC analysis , *SEVERITY of illness index , *HEALTH & social status , *DESCRIPTIVE statistics , *PSYCHOLOGICAL factors - Abstract
The perspective of homeless adults on their health care service utilization is not well studied. This article describes a study that used in-depth, semistructured interviews with 18 individuals to highlight the viewpoints of homeless people who are frequent users of the emergency department (ED) about the influence of life events on service utilization. Participants reported high levels of pain and comorbid psychiatric, substance use, and medical conditions. They also reported an identifiable pattern of health care utilization, often centered on a crisis event, influenced by high perceived medical needs, inability to cope after crisis, predisposing vulnerability from social determinants of health, and health care system factors. A social work case management intervention often led to a period of stability and use of ED alternatives. Modifiable targets for intervention at the health care system and local levels include improving trust and convenience of ED alternatives, enhancing consistency of care at ED-alternative sites, and educating those at risk of frequent ED use about community alternatives. [ABSTRACT FROM AUTHOR]
- Published
- 2019
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33. Dictyostelium polycephalum Infection of Human Cornea.
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Reddy, Ashok Kumar, Balne, Praveen Kumar, Garg, Prashant, Sangwan, Virender Singh, Das, Madhusmita, Krishna, Pravin V., Bagga, Bhupesh, and Vemuganti, Geeta K.
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LETTERS to the editor , *KERATITIS - Abstract
A letter to the editor is presented about a case of keratitis caused by Dictyostelium polycephalum in a 35-year-old immunocompetent man in India.
- Published
- 2010
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34. The amniotic fluid proteome changes across gestation in humans and rhesus macaques.
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Shorey-Kendrick, Lyndsey E., Crosland, B. Adam, Spindel, Eliot R., McEvoy, Cindy T., Wilmarth, Phillip A., Reddy, Ashok P., Zientek, Keith D., Roberts, Victoria H. J., D'Mello, Rahul J., Ryan, Kimberly S., Olyaei, Amy F., Hagen, Olivia L., Drake, Matthew G., McCarty, Owen J.T., Scottoline, Brian P., and Lo, Jamie O.
- Subjects
- *
RHESUS monkeys , *MACAQUES , *AMNIOTIC liquid , *PREGNANCY , *COMPLEX fluids , *FETAL development , *MORPHOGENESIS - Abstract
Amniotic fluid is a complex biological medium that offers protection to the fetus and plays a key role in normal fetal nutrition, organogenesis, and potentially fetal programming. Amniotic fluid is also critically involved in longitudinally shaping the in utero milieu during pregnancy. Yet, the molecular mechanism(s) of action by which amniotic fluid regulates fetal development is ill-defined partly due to an incomplete understanding of the evolving composition of the amniotic fluid proteome. Prior research consisting of cross-sectional studies suggests that the amniotic fluid proteome changes as pregnancy advances, yet longitudinal alterations have not been confirmed because repeated sampling is prohibitive in humans. We therefore performed serial amniocenteses at early, mid, and late gestational time-points within the same pregnancies in a rhesus macaque model. Longitudinally-collected rhesus amniotic fluid samples were paired with gestational-age matched cross-sectional human samples. Utilizing LC–MS/MS isobaric labeling quantitative proteomics, we demonstrate considerable cross-species similarity between the amniotic fluid proteomes and large scale gestational-age associated changes in protein content throughout pregnancy. This is the first study to compare human and rhesus amniotic fluid proteomic profiles across gestation and establishes a reference amniotic fluid proteome. The non-human primate model holds promise as a translational platform for amniotic fluid studies. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
35. A Postcard Primer Prior to Mailed Fecal Immunochemical Test Among Veterans: a Randomized Controlled Trial.
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Deeds, Stefanie, Liu, Terrence, Schuttner, Linnaea, Wheat, Chelle, Gunnink, Eric, Geyer, John, Beste, Lauren, Chen, Anders, Dominitz, Jason A., Nelson, Kari, and Reddy, Ashok
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- *
RANDOMIZED controlled trials , *POSTCARDS , *MEDICAL screening , *COLORECTAL cancer - Abstract
Background: Mailed fecal immunochemical testing (FIT) programs are increasingly utilized for population-based colorectal cancer (CRC) screening. Advanced notifications (primers) are one behavioral designed feature of many mailed FIT programs, but few have tested this feature among Veterans. Objective: To determine if an advanced notification, a primer postcard, increases completion of FIT among Veterans. Design: This is a prospective, randomized quality improvement trial to evaluate a postcard primer prior to a mailed FIT versus mailed FIT alone. Participants: A total of 2404 Veterans enrolled for care at a large VA site that were due for average-risk CRC screening. Intervention: A written postcard sent 2 weeks in advance of a mailed FIT kit that contained information on CRC screening and completing a FIT. Main Measures: Our primary outcome was FIT completion at 90 days, and our secondary outcome was FIT completion at 180 days. Key Results: Overall, unadjusted mailed FIT return rates were similar among control vs. primer arms at 90 days (27% vs. 29%, p = 0.11). Our adjusted analysis found a primer postcard did not increase FIT completion compared to mailed FIT alone (OR 1.14 (0.94, 1.37)). Conclusions: Though primers are often a standard part of mailed FIT programs, we did not find an increase in FIT completion with mailed postcard primers among Veterans. Given the overall low mailed FIT return rates, testing different ways to improve return rates is essential to improving CRC screening. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
36. Unraveling the role of TGFβ signaling in thoracic aortic aneurysm and dissection using Fbn1 mutant mouse models.
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Deleeuw, Violette, Carlson, Eric, Renard, Marjolijn, Zientek, Keith D., Wilmarth, Phillip A., Reddy, Ashok P., Manalo, Elise C., Tufa, Sara F., Keene, Douglas R., Olbinado, Margie, Stampanoni, Marco, Kanki, Sachiko, Yanagisawa, Hiromi, Mosquera, Laura Muiño, Sips, Patrick, De Backer, Julie, and Sakai, Lynn Y.
- Subjects
- *
THORACIC aneurysms , *DISSECTING aneurysms , *AORTIC dissection , *EXTRACELLULAR matrix proteins , *LABORATORY mice , *TRYPTASE - Abstract
• Reducing the expression of Tgfb2 or replacing wildtype Fbn1 with a mutant allele in which the first hybrid domain is deleted showed comparable deleterious effects on aortic disease severity in Fbn1 mutant mice modeling Marfan syndrome. • Reduced TGFβ signaling and increased amounts of mast cell proteases were associated with aortic "microdissections" in mice in which the first hybrid domain is deleted in fibrillin-1. • Increased quantities of extracellular matrix proteins were identified in Fbn1 mutant mice with aortic aneurysm (without rupture). • Marked reductions in quantities of fibrillins and microfibril proteins were revealed in Fbn1 mutant mice with aortic aneurysm and rupture. • Context-dependent effects on TGFβ signaling were associated with Fbn1 mutant mice representing mild to severe thoracic aortic disease. Although abnormal TGFβ signaling is observed in several heritable forms of thoracic aortic aneurysms and dissections including Marfan syndrome, its precise role in aortic disease progression is still disputed. Using a mouse genetic approach and quantitative isobaric labeling proteomics, we sought to elucidate the role of TGFβ signaling in three Fbn1 mutant mouse models representing a range of aortic disease from microdissection (without aneurysm) to aneurysm (without rupture) to aneurysm and rupture. Results indicated that reduced TGFβ signaling and increased mast cell proteases were associated with microdissection. In contrast, increased abundance of extracellular matrix proteins, which could be reporters for positive TGFβ signaling, were associated with aneurysm. Marked reductions in collagens and fibrillins, and increased TGFβ signaling, were associated with aortic rupture. Our data indicate that TGFβ signaling performs context-dependent roles in the pathogenesis of thoracic aortic disease. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
37. The amniotic fluid proteome changes across gestation in humans and rhesus macaques.
- Author
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Shorey-Kendrick, Lyndsey E., Crosland, B. Adam, Spindel, Eliot R., McEvoy, Cindy T., Wilmarth, Phillip A., Reddy, Ashok P., Zientek, Keith D., Roberts, Victoria H. J., D'Mello, Rahul J., Ryan, Kimberly S., Olyaei, Amy F., Hagen, Olivia L., Drake, Matthew G., McCarty, Owen J.T., Scottoline, Brian P., and Lo, Jamie O.
- Subjects
- *
RHESUS monkeys , *MACAQUES , *AMNIOTIC liquid , *PREGNANCY , *COMPLEX fluids , *FETAL development , *MORPHOGENESIS - Abstract
Amniotic fluid is a complex biological medium that offers protection to the fetus and plays a key role in normal fetal nutrition, organogenesis, and potentially fetal programming. Amniotic fluid is also critically involved in longitudinally shaping the in utero milieu during pregnancy. Yet, the molecular mechanism(s) of action by which amniotic fluid regulates fetal development is ill-defined partly due to an incomplete understanding of the evolving composition of the amniotic fluid proteome. Prior research consisting of cross-sectional studies suggests that the amniotic fluid proteome changes as pregnancy advances, yet longitudinal alterations have not been confirmed because repeated sampling is prohibitive in humans. We therefore performed serial amniocenteses at early, mid, and late gestational time-points within the same pregnancies in a rhesus macaque model. Longitudinally-collected rhesus amniotic fluid samples were paired with gestational-age matched cross-sectional human samples. Utilizing LC–MS/MS isobaric labeling quantitative proteomics, we demonstrate considerable cross-species similarity between the amniotic fluid proteomes and large scale gestational-age associated changes in protein content throughout pregnancy. This is the first study to compare human and rhesus amniotic fluid proteomic profiles across gestation and establishes a reference amniotic fluid proteome. The non-human primate model holds promise as a translational platform for amniotic fluid studies. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
38. From hazy dusk till dawn.
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Bansal, Rolika, Majji, Ajit, Reddy, Ashok, Honavar, Santosh, Majji, Ajit B, Reddy, Ashok G, and Honavar, Santosh G
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COVID-19 , *INTRAVITREAL injections , *ANTIFUNGAL agents , *INFORMED consent (Medical law) , *DIAGNOSIS , *CANDIDEMIA , *VITRECTOMY - Abstract
Case A 70-year-old Asian Indian male, after recovery from COVID-19 40 days ago, presented with decreased visual acuity in the right eye (OD) since 1 week, associated with floaters and redness. A combination of oral and intravitreal antifungal agents with pars-plana vitrectomy has proven to be successful.[[2]],[[3]] In our case, pars plana vitrectomy, intravitreal amphotericin B injection, and maintenance dose of oral itraconazole showed a significant clinical response. Examine his oral cavityPars-plana vitrectomy with intravitreal antifungal injectionSystemic antifungal medicationsAll the above Findings and Management He had a patch of oral thrush. [Extracted from the article]
- Published
- 2021
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39. Learning from national implementation of the Veterans Affairs Clinical Resource Hub (CRH) program for improving access to care: protocol for a six year evaluation.
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Rubenstein, Lisa V., Curtis, Idamay, Wheat, Chelle L., Grembowski, David E., Stockdale, Susan E., Kaboli, Peter J., Yoon, Jean, Felker, Bradford L., Reddy, Ashok S., and Nelson, Karin M.
- Abstract
Background: The Veterans Affairs (VA) Clinical Resource Hub (CRH) program aims to improve patient access to care by implementing time-limited, regionally based primary or mental health staffing support to cover local staffing vacancies. VA's Office of Primary Care (OPC) designed CRH to support more than 1000 geographically disparate VA outpatient sites, many of which are in rural areas, by providing virtual contingency clinical staffing for sites experiencing primary care and mental health staffing deficits. The subsequently funded CRH evaluation, carried out by the VA Primary Care Analytics Team (PCAT), partnered with CRH program leaders and evaluation stakeholders to develop a protocol for a six-year CRH evaluation. The objectives for developing the CRH evaluation protocol were to prospectively: 1) identify the outcomes CRH aimed to achieve, and the key program elements designed to achieve them; 2) specify evaluation designs and data collection approaches for assessing CRH progress and success; and 3) guide the activities of five geographically dispersed evaluation teams. Methods: The protocol documents a multi-method CRH program evaluation design with qualitative and quantitative elements. The evaluation's overall goal is to assess CRH's return on investment to the VA and Veterans at six years through synthesis of findings on program effectiveness. The evaluation includes both observational and quasi-experimental elements reflecting impacts at the national, regional, outpatient site, and patient levels. The protocol is based on program evaluation theory, implementation science frameworks, literature on contingency staffing, and iterative review and revision by both research and clinical operations partners. Discussion: Health systems increasingly seek to use data to guide management and decision-making for newly implemented clinical programs and policies. Approaches for planning evaluations to accomplish this goal, however, are not well-established. By publishing the protocol, we aim to increase the validity and usefulness of subsequent evaluation findings. We also aim to provide an example of a program evaluation protocol developed within a learning health systems partnership. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
40. Proteomic profiling of retina and retinal pigment epithelium combined embryonic tissue to facilitate ocular disease gene discovery.
- Author
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Aryal, Sandeep, Anand, Deepti, Huang, Hongzhan, Reddy, Ashok P., Wilmarth, Phillip A., David, Larry L., and Lachke, Salil A.
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RHODOPSIN , *FETAL tissues , *RETINA , *TANDEM mass spectrometry , *PROTEIN expression , *FALSE discovery rate , *GENE expression profiling , *PROTEOMICS - Abstract
To expedite gene discovery in eye development and its associated defects, we previously developed a bioinformatics resource-tool iSyTE (integrated Systems Tool for Eye gene discovery). However, iSyTE is presently limited to lens tissue and is predominantly based on transcriptomics datasets. Therefore, to extend iSyTE to other eye tissues on the proteome level, we performed high-throughput tandem mass spectrometry (MS/MS) on mouse embryonic day (E)14.5 retina and retinal pigment epithelium combined tissue and identified an average of 3300 proteins per sample (n = 5). High-throughput expression profiling-based gene discovery approaches–involving either transcriptomics or proteomics—pose a key challenge of prioritizing candidates from thousands of RNA/proteins expressed. To address this, we used MS/MS proteome data from mouse whole embryonic body (WB) as a reference dataset and performed comparative analysis–termed "in silico WB-subtraction"—with the retina proteome dataset. In silico WB-subtraction identified 90 high-priority proteins with retina-enriched expression at stringency criteria of ≥ 2.5 average spectral counts, ≥ 2.0 fold-enrichment, false discovery rate < 0.01. These top candidates represent a pool of retina-enriched proteins, several of which are associated with retinal biology and/or defects (e.g., Aldh1a1, Ank2, Ank3, Dcn, Dync2h1, Egfr, Ephb2, Fbln5, Fbn2, Hras, Igf2bp1, Msi1, Rbp1, Rlbp1, Tenm3, Yap1, etc.), indicating the effectiveness of this approach. Importantly, in silico WB-subtraction also identified several new high-priority candidates with potential regulatory function in retina development. Finally, proteins exhibiting expression or enriched-expression in the retina are made accessible in a user-friendly manner at iSyTE (https://research.bioinformatics.udel.edu/iSyTE/), to allow effective visualization of this information and facilitate eye gene discovery. [ABSTRACT FROM AUTHOR]
- Published
- 2023
- Full Text
- View/download PDF
41. Risk Factors and Clinical Outcomes of Bacterial and Fungal Scleritis at a Tertiary Eye Care Hospital.
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Reddy, Jagadesh C., Murthy, Somasheila I., Reddy, Ashok K., and Garg, Prashant
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SCLERITIS , *SCLERA diseases , *EYE infections , *BACTERIAL diseases , *RETINAL surgery , *OPHTHALMIC surgery - Abstract
Purpose: The aim was to analyze demographics, risk factors, pathogenic organisms, and clinical outcome in cases with microbiologically proven bacterial or fungal scleritis. Materials and Methods: Retrospective review of all the medical records of patients with microbiologically proven infectious scleritis examined from March 2005 to December 2009 in the cornea services of L. V. Prasad Eye Institute, Hyderabad, India was done. Results: Forty-two eyes of 42 patients were included in this study. The mean age at presentation was 48.52 ± 14.10 years (range: 12-70). Surgery was the major risk factor seen in 24 eyes (58.5%). Scleral infection was noted after vitreoretinal surgery (with scleral buckle) in 15 eyes, cataract surgery in 3 eyes, pterygium surgery in 3 eyes, corneoscleral tear repair and scleral buckle surgery in 3 eyes. Sixteen eyes (39%) were on systemic or topical steroids at the time of presentation. History of injury was noted in 9 eyes (22%) and diabetes mellitus in 7 patients (17%). Associated keratitis was noted in 9 eyes (21.4%). The scleral abscess was unifocal in 33 eyes (78.5%), multifocal in 6 eyes (14.2%) and diffuse in 3 eyes (7.14%). The final follow-up ranged from 24 days to 37 months. The final visual acuity was better in 18 eyes (42.8%), stable in 13 (30.9%), and deteriorated in 7 eyes (16.6%). Recurrence was seen in 4 eyes (9.5%). Conclusions: Surgery is a major risk factor for infectious scleritis in our series. Fungus was the most common organism isolated. Thorough debridement and intensive use of medications have improved the outcome. [ABSTRACT FROM AUTHOR]
- Published
- 2015
- Full Text
- View/download PDF
42. Home Telehealth in the Veterans Health Administration: Trends and Correlates of Length of Enrollment from 2010 to 2017.
- Author
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Gray, Kristen E., Rao, Mayuree, Gunnink, Eric, Eschenroeder, Lee, Geyer, John R., Nelson, Karin M., and Reddy, Ashok
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VETERANS' health , *PROPORTIONAL hazards models , *DISEASE management , *TELEMEDICINE - Abstract
Background: Home telehealth (HT) programs enable communication and remote monitoring of patient health data between clinician visits, with the goal of improving chronic disease self-management and outcomes. The Veterans Health Administration (VHA) established one of the earliest HT programs in the country in 2003; however, little is known about how these services have been utilized and expanded over the last decade. Objective: To describe trends in use of VHA's HT program from 2010 through 2017 and correlates of length of enrollment in HT services. Design: Retrospective observational cohort study. Participants: Patients enrolled in HT between January 1, 2010 and December 31, 2017. Main Measures: We described the number and characteristics of patients enrolled in HT, including the chronic conditions managed. We also identified length of HT enrollment and examined patient and facility characteristics associated with longer enrollment. Key Results: The total number of patients enrolled in HT was 402,263. At time of enrollment, half were >65 years old, 91% were male, and 59.3% lived in urban residences. The most common conditions addressed by HT were hypertension (28.8%), obesity (23.9%), and diabetes (17.0%). The median time to disenrollment in HT was 261 days (8.6 months) but varied by chronic condition. In a multivariable Cox proportional hazards model, covariates associated with higher likelihood of staying enrolled were older age, male gender, non-Hispanic Black race/ethnicity, lower neighborhood socioeconomic status, living in a more rural setting, and a greater burden of comorbidities per the Gagne index. Conclusions: Across 8 years, over 400,000 veterans engaged in HT services for chronic disease management and over half remained in the program for longer than 8 months. Our work provides a real-world evaluation of HT service expansion in the VHA. Additional studies are necessary to identify optimal enrollment duration and patients most likely to benefit from HT services. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
43. Encouraging early outcomes with image guided pencil beam proton therapy for cranio-spinal irradiation: first report from India.
- Author
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Gaikwad, Utpal, Noufal, M. P., Sylvia, Jacinthlyn, Reddy, Ashok K., Panda, Pankaj Kumar, Chilukuri, Srinivas, Sharma, Dayananda, and Jalali, Rakesh
- Subjects
- *
PROTON therapy , *GERM cell tumors , *IRRADIATION , *SURVIVAL rate , *CENTRAL nervous system cancer ,CENTRAL nervous system tumors - Abstract
Background: To report our experience with image guided pencil beam proton beam therapy (PBT) for craniospinal irradiation (CSI).Materials and Methods: Between January 2019 and December 2021, we carried out a detailed audit of the first forty patients treated with PBT. We had recorded acute toxicities, reporting early outcomes and discuss limitations of current contouring guidelines during CSI PBT planning.Results: Median age of the patient cohort was 8 years, and histologies include 20 medulloblastoma, 7 recurrent ependymoma, 3 pineoblastoma, 3 were germ cell tumors and remaining 7 constituted other diagnoses. Forty percent patients received concurrent chemotherapy. Median CSI dose was 23.4 Gy (Gray; range 21.6-35 Gy). Thirty-five patients (87.5%) completed their CSI without interruption, 5 required hospital admission. No patient had grade 2/ > weight loss during the treatment. Forty-five percent (18) developed grade 1 haematological toxicities and 20% (8) developed grade 2 or 3 toxicities; none had grade 4 toxicities. At median follow up of 12 months, 90% patients are alive of whom 88.9% are having local control. Special consideration with modification in standard contouring used at our institute helped in limiting acute toxicities in paediatric CSI patients.Conclusion: Our preliminary experience with modern contemporary PBT using pencil beam technology and daily image guidance in a range of tumours suitable for CSI is encouraging. Patients tolerated the treatment well with acceptable acute toxicity and expected short-term survival outcome. In paediatric CSI patients, modification in standard contouring guidelines required to achieve better results with PBT. [ABSTRACT FROM AUTHOR]- Published
- 2022
- Full Text
- View/download PDF
44. Impact of a statewide Emergency Department Information Exchange on health care use and expenditures.
- Author
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Sabbatini, Amber K., McConnell, K. John, Parrish, Canada, Frogner, Bianca K., Reddy, Ashok, Zatzick, Douglas F., Kreuter, William, and Basu, Anirban
- Abstract
Objective: To assess the effects of a program mandating the statewide adoption of an Emergency Department Information Exchange (EDIE) on health care utilization and spending among Medicaid enrollees in Washington state. Data Source: Medicaid claims and managed care encounters from the Washington Health Care Authority. Study Design: A difference‐in‐differences analysis with trends was used to compare changes in ED visits, inpatient admissions, primary care visits, and expenditures among frequent ED users (≥5 ED visits in past year) to those of infrequent users through the second year Washington's program. Data Extraction: The study population included adult Medicaid enrollees with ED visits between January 2010 and October 2014. Principal Findings: There were 505,667 ED visits among 153,543 unique enrollees included in the analysis. Washington's program was associated with a small, but statistically significant differential change of −0.70 ED visits per enrollee per year (95% CI: −1.24, −0.16) in the first year after EDIE was mandated, or 8.2% of the baseline ED visit rate among frequent users. However, by the second year of implementation, these effects on ED use were no longer significant, nor were there any measurable effects on inpatient admissions, primary care use, or expenditures in any period. Conclusions: Statewide implementation of EDIE was associated with a small reduction in ED use among frequent users in the first year of the program but did not change overall spending or other utilization outcomes. [ABSTRACT FROM AUTHOR]
- Published
- 2022
- Full Text
- View/download PDF
45. Proteomic profiling of concurrently isolated primary microvascular endothelial cells, pericytes, and vascular smooth muscle cells from adult mouse heart.
- Author
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Cao, Zhiping, Minnier, Jessica, Liu, Lijuan, Scott, Kristin L. Lyon, Reddy, Ashok P., Wilmarth, Phillip A., David, Larry L., Barnes, Anthony P., Grafe, Marjorie R., Kaul, Sanjiv, Alkayed, Nabil J., and Davis, Catherine M.
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VASCULAR smooth muscle , *ENDOTHELIAL cells , *MUSCLE cells , *MOLECULAR biology , *PERICYTES , *PROTEOMICS - Abstract
The microcirculation serves crucial functions in adult heart, distinct from those carried out by epicardial vessels. Microvessels are governed by unique regulatory mechanisms, impairment of which leads to microvessel-specific pathology. There are few treatment options for patients with microvascular heart disease, primarily due to limited understanding of underlying pathology. High throughput mRNA sequencing and protein expression profiling in specific cells can improve our understanding of microvessel biology and disease at the molecular level. Understanding responses of individual microvascular cells to the same physiological or pathophysiological stimuli requires the ability to isolate the specific cell types that comprise the functional units of the microcirculation in the heart, preferably from the same heart, to ensure that different cells have been exposed to the same in-vivo conditions. We developed an integrated process for simultaneous isolation and culture of the main cell types comprising the microcirculation in adult mouse heart: endothelial cells, pericytes, and vascular smooth muscle cells. These cell types were characterized with isobaric labeling quantitative proteomics and mRNA sequencing. We defined microvascular cell proteomes, identified novel protein markers, and confirmed established cell-specific markers. Our results allow identification of unique markers and regulatory proteins that govern microvascular physiology and pathology. [ABSTRACT FROM AUTHOR]
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- 2022
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46. Novel use of Pedicled Medial Sural Artery Perforator flap for Post Burn Knee Contractures.
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Sharma, Mukesh Kumar, Babu, Vaddi Suman, Harini, B. S., Jha, Manoj Kumar, and Reddy, Ashok Daram
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PERFORATOR flaps (Surgery) , *KNEE joint , *KNEE , *ARTERIES - Abstract
Background: Postburn flexion contractures of the knee may arise even with adequate treatment of the burn injury. Pedicled medial sural artery perforator (MSAP) flap has been described for the reconstruction of defects of the knee and proximal third of the leg. Its use in the management of postburn contracture release is sparse. We are presenting the use of a medial sural artery pedicled flap for the reconstruction following postburn knee contracture release. Materials and Methods: This study included six patients with postburn unstable scars and a mild degree of knee contractures who underwent release of the contracture and coverage using MSAP pedicled flap. The results in terms of flap size, recurrence, complications, functional outcome, and cosmesis were assessed. Results: The flap size ranged from 7 cm × 6 cm to 13 cm × 7 cm with a mean pedicle length of 9.41 cm. All six flaps survived without any complications with a satisfactory outcome. The patients were followed up for 6-18 months. There was no recurrence of contracture without any restriction of knee joint mobility. Conclusion: MSAP flap is a reliable flap and should be considered for the management of postburn knee contracture of grade 2 and grade 3 contractures, as it provides optimum and ideal coverage with fewer chances of recurrence. [ABSTRACT FROM AUTHOR]
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- 2022
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47. Early intravitreal treatment of endogenous bacterial endophthalmitis.
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Yonekawa, Yoshihiro, Chan, RV Paul, Reddy, Ashok K, Pieroni, Cristiana G, Lee, Thomas C, and Lee, Sangwoo
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EYE infections , *STAPHYLOCOCCUS , *ANTIBIOTICS , *PARS plana , *VITRECTOMY - Abstract
A bstract Background: There are currently no standardized treatment guidelines for endogenous bacterial endophthalmitis. We report the long-term outcomes of early intravitreal treatment of endogenous bacterial endophthalmitis, defined as intravitreal and systemic antibiotics administered within 24 h of diagnosis, with conservative use of pars plana vitrectomy. Design: Interventional retrospective case series. Participants: Consecutive patients treated for culture-proven endogenous bacterial endophthalmitis between 2001 and 2008 at the Weill Cornell Medical Center. Methods: The clinical records of 18 eyes from 13 patients were reviewed. Main Outcome Measures: Visual acuity. Results: Mean age at presentation was 61 (25-85) years. All patients had underlying medical conditions. Extraocular infectious foci were identified in nine (69%) patients, with endocarditis being the most common. Gram-positive organisms were identified in 12 (92%) patients, including five with methicillin-resistant Staphylococcus aureus. No cases were misdiagnosed. Final visual acuities of better than 6/120 and counting fingers were achieved in 6 (55%) and 7 (64%) of 11 eyes, respectively. Longer time between onset of ocular symptoms and intravitreal antibiotic injection correlated with worse visual outcomes ( P < 0.05) and was associated with mortality ( P < 0.05). Mortality was also associated with methicillin-resistant S. aureus infection ( P < 0.05). Of those with follow up longer than 1 year, retinal detachment developed in 3 of 10 eyes (30%) after the acute infection, and cataract developed in 6 of 9 (67%) phakic eyes. Mean follow up was 146 (4-313) weeks. Conclusions: Intravitreal antibiotics for endogenous bacterial endophthalmitis administered within 24 h to supplement immediate systemic antibiotics may provide a relatively favourable visual prognosis. [ABSTRACT FROM AUTHOR]
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- 2011
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48. Optimizing Diagnosis and Management of Nocardia Keratitis, Scleritis, and Endophthalmitis: 11-Year Microbial and Clinical Overview
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DeCroos, Francis Char, Garg, Prashant, Reddy, Ashok K., Sharma, Ashish, Krishnaiah, Sannapaneni, Mungale, Meeta, and Mruthyunjaya, Prithvi
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KERATITIS , *EYE inflammation , *NOCARDIA , *BIOLOGICAL assay , *MICROBIOLOGY , *OPHTHALMIC surgery , *DIAGNOSIS , *THERAPEUTICS - Abstract
Objective: To identify clinical factors and microbiological assays that facilitate a rapid diagnosis of Nocardia keratitis, scleritis, and endophthalmitis, and to determine optimal medical and surgical management strategies. Design: Retrospective, consecutive case series. Participants: A total of 111 cases of keratitis, 11 cases of scleritis, and 16 cases of endophthalmitis, all culture-proven Nocardia infections, were identified between January 1999 and January 2010. Intervention: The keratitis cases underwent intensive medical management, and the scleritis and endophthalmitis cases required concurrent surgical intervention for disease control. Corneal and scleral scrapings, as well as undiluted vitreous sample, were submitted for microbiologic evaluation (direct smear and culture). Main Outcome Measures: Historical points, clinical findings, and microbiologic assays that facilitated a prompt Nocardia diagnosis were identified, and management choices were examined for correlation with final acuity. Results: Ocular exposure to soil or plant matter was a common historical point in cases of Nocardia keratitis (48%) and scleritis (45%), respectively. Nocardia keratitis often (38.7%) presented with “wreath”-shaped anterior stromal infiltrate or infiltrate interspersed with elevated, pinhead-sized, chalky lesions. Most patients with scleritis (63.4%) presented with nodular lesions demonstrating pointed abscesses. Nocardia endophthalmitis typically (75%) presented with endoexudates or nodular exudates surrounding the pupillary border. Gram stain and 1% acid-fast stain enabled prompt diagnosis of Nocardia in 64% and 63% of keratitis cases and 45% and 63% of scleritis cases, respectively. Direct smear was usually not revealing in cases of Nocardia endophthalmitis. Isolates from Nocardia keratitis, scleritis, and endophthalmitis demonstrated 97%, 100%, and 90% susceptibility to amikacin, respectively. Nocardia keratitis resolved with medical therapy alone in 82% of cases. Younger age and better initial acuity correlated with improved final acuity in keratitis cases. Outcomes were poor after Nocardia scleritis and endophthalmitis. Conclusions: Early appropriate treatment often results in visual recovery in eyes with Nocardia keratitis. Despite aggressive and prompt surgical intervention, the prognosis for Nocardia scleritis and endophthalmitis is more guarded. Nocardia isolated from ocular infections demonstrate high levels of susceptibility to amikacin. Financial Disclosure(s): The author(s) have no proprietary or commercial interest in any materials discussed in this article. [Copyright &y& Elsevier]
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- 2011
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49. The Rainbow Trout (Oncorhynchus mykiss) Tumor Model: Recent Applications in Low-Dose Exposures to Tumor Initiators and Promoters.
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Williams, David E., Bailey, George S., Reddy, Ashok, Hendricks, Jerry D., Oganesian, Aram, Orner, Gayle A., Pereira, Cliff B., and Swenberg, James A.
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CARCINOGENESIS , *PATHOLOGY , *TUMORS in animals , *RAINBOW trout , *ANIMAL models in research - Abstract
The rainbow trout has been utilized as a model for human carcinogenesis for a number of years. Trout are relatively inexpensive to maintain and exhibit (over the 9-12-month tumor assay period) very low spontaneous tumor backgrounds. One of the most powerful applications of this model is the design and conduct of large-scale tumor studies requiring thousands of animals that address statistically challenging questions of dose-response. Two recent examples of such applications include our studies on 13C as a tumor promoter and DBP as a tumor initiator. 13C was shown to promote AFB ]--initiated liver cancer at doses near those recommended for supplementation in humans. Further studies are required to determine if the mechanisms responsible for promotion in trout can be extrapolated to humans. In the second example, we report results from the largest animal tumor study ever conducted. A total of 42,000 trout were utilized to measure DBP carcinogenesis down to incidences of 1 in 5,000. The dose response model deviated significantly from linearity although the existence of a threshold could not be statistically established. Extrapolation of the data model predicts a DBP dose producing 1 in 106 cancers that is 1,000-fold higher than predicted by the conservative linear model. If these results can be confirmed with other carcinogens (genotoxic and perhaps nongenotoxic) and other targets, this could have a significant impact on the utilization of animal tumor data in human risk assessment. [ABSTRACT FROM AUTHOR]
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- 2003
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50. COVID-19 Vaccinations Among US Veterans with Mental Illness: a Retrospective Cohort Study.
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Chen, Anders, Beste, Lauren A., Strack, Kristen, Geyer, John, Wheat, Chelle, Nelson, Karin, and Reddy, Ashok
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COVID-19 vaccines , *MENTAL illness , *MENTAL health services , *RURAL health clinics , *VETERANS , *PEOPLE with mental illness , *COMMUNITY mental health services - Abstract
Keywords: COVID-19 vaccination; mental health disparities; veterans EN COVID-19 vaccination mental health disparities veterans 3775 3777 3 10/25/22 20221101 NES 221101 Prior Presentation: This work was presented at the Society of General Internal Medicine Annual Meeting, April 7, 2022. Our study also expands the VA COVID-19 vaccine equity literature as the first to incorporate state data, thereby addressing concerns that potential disparities (arising from differential ability to navigate complicated, online vaccine scheduling systems that were the hallmark of early non-VA vaccination efforts) were being masked. However, to date, no large studies have evaluated COVID-19 vaccination in persons with mental illness outside the VA, preventing comparisons regarding the impact of the VA model of care. [Extracted from the article]
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- 2022
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