55 results on '"Nihar, Desai"'
Search Results
2. PB1863: VENETOCLAX AND HYPOMETHYLATING AGENT BASED OUTPATIENT AML INDUCTION- COST-EFFECTIVE METHOD FOR LMICS-REAL WORLD DATA FROM A TERTIARY CARE CENTER
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Priyanka Chauhan, Nihar Desai, Shilpi Agarwal, Archit Pandharipande, Sanjeev Yadav, Anshul Gupta, Manish Kumar Singh, Dinesh Chandra, Khaliqur Rehman, Ruchi Gupta, Rajesh Kashyap, and Soniya Nityanand
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Diseases of the blood and blood-forming organs ,RC633-647.5 - Published
- 2023
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3. Outcomes-Driven Clinical Phenotyping in Cardiogenic Shock using a Mixture of Experts.
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Nathan C. Hurley, Alyssa Berkowitz, Frederick Masoudi, Joseph S. Ross, Nihar Desai, Nilay Shah, Sanket S. Dhruva, and Bobak J. Mortazavi
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- 2021
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4. Uptake of evidence by physicians: De-adoption of erythropoiesis-stimulating agents after the TREAT trial
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Khoa Vu, Jiani Zhou, Alexander Everhart, Nihar Desai, Jeph Herrin, Anupam B. Jena, Joseph S. Ross, Nilay D. Shah, and Pinar Karaca-Mandic
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De-adoption ,Physician prescribing ,Medication utilization ,Medical safety ,Diseases of the genitourinary system. Urology ,RC870-923 - Abstract
Abstract Background Variation in de-adoption of ineffective or unsafe treatments is not well-understood. We examined de-adoption of erythropoiesis-stimulating agents (ESA) in anemia treatment among patients with chronic kidney disease (CKD) following new clinical evidence of harm and ineffectiveness (the TREAT trial) and the FDA’s revision of its safety warning. Method We used a segmented regression approach to estimate changes in use of epoetin alfa (EPO) and darbepoetin alfa (DPO) in the commercial, Medicare Advantage (MA) and Medicare fee-for-service (FFS) populations. We also examined how changes in both trends and levels of use were associated with physicians’ characteristics. Results Use of DPO and EPO declined over the study period. There were no consistent changes in DPO trend across insurance groups, but the level of DPO use decreased right after the FDA revision in all groups. The decline in EPO use trend was faster after the TREAT trial for all groups. Nephrologists were largely more responsive to evidence than primary care physicians. Differences by physician’s gender, and age were not consistent across insurance populations and types of ESA. Conclusions Physician specialty has a dominant role in prescribing decision, and that specializations with higher use of treatment (nephrologists) were more responsive to new evidence of unsafety and ineffectiveness.
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- 2021
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5. Trends and Outcomes of Cardiac Transplantation in the Lowest Urgency Candidates
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Michael A. Fuery, Fouad Chouairi, Peter Natov, Jasjit Bhinder, Maya Rose Chiravuri, Lynn Wilson, Katherine A. Clark, Samuel W. Reinhardt, Clancy Mullan, P. Elliott Miller, Robert P. Davis, Joseph G. Rogers, Chetan B. Patel, Sounok Sen, Arnar Geirsson, Muhammad Anwer, Nihar Desai, and Tariq Ahmad
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advanced heart failure ,heart transplantation ,outcomes research ,UNOS ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background Because of discrepancies between donor supply and recipient demand, the cardiac transplantation process aims to prioritize the most medically urgent patients. It remains unknown how recipients with the lowest medical urgency compare to others in the allocation process. We aimed to examine differences in clinical characteristics, organ allocation patterns, and outcomes between cardiac transplantation candidates with the lowest and highest medical urgency. Methods and Results We performed a retrospective analysis of the United Network for Organ Sharing database. Patients listed for cardiac transplantation between January 2011 and May 2020 were stratified according to status at time of transplantation. Baseline recipient and donor characteristics, waitlist survival, and posttransplantation outcomes were compared in the years before and after the 2018 allocation system change. Lower urgency patients in the old system were older (58.5 versus 56 years) and more likely female (54.4% versus 23.8%) compared with the highest urgency patients, and these trends persisted in the new system (P
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- 2021
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6. Cardiovascular safety profile of taxanes and vinca alkaloids: 30 years FDA registry experience
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Avirup Guha, Sarju Ganatra, Brijesh Patel, Daniel Addison, Anita Deswal, Sherry-Ann Brown, Michael Fradley, Akshee Batra, Lauren A Baldassarre, Nihar Desai, Neal Weintraub, Zeeshan Hussain, Vivek Agarwala, Purvish M Parikh, and Arjun Ghosh
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Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Objective Antimicrotubular agents are among the most commonly used classes of chemotherapeutic agents, but the risk of cardiovascular adverse events (CVAEs) remains unclear. Our objective was to study the CVAEs associated with antimicrotubular agents.Methods The Food and Drug Administration’s Adverse Event Reporting System was used to study CVAEs in adults from 1990 to 2020. Reported single-agent (only taxane or vinca alkaloid) CVAEs were compared with combination therapy (with at least one of the four major cardiotoxic drugs: anthracycline, HER2Neu inhibitors, tyrosine kinase inhibitors and checkpoint inhibitors) using adjusted polytomous logistic regression.Results Over 30 years, 134 398 adverse events were reported, of which 18 426 (13.4%) were CVAEs, with 74.1% due to taxanes and 25.9% due to vinca alkaloids. In 30 years, there has been a reduction in the proportion of reported CVAEs for taxanes from 15% to 11.8% (Cochran-Armitage P-trends
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- 2021
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7. Obesity and the Bidirectional Risk of Cancer and Cardiovascular Diseases in African Americans: Disparity vs. Ancestry
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Avirup Guha, Xiaoling Wang, Ryan A. Harris, Anna-Gay Nelson, David Stepp, Zachary Klaassen, Priyanka Raval, Jorge Cortes, Steven S. Coughlin, Vladimir Y. Bogdanov, Justin X. Moore, Nihar Desai, D. Douglas Miller, Xin-Yun Lu, Ha Won Kim, and Neal L. Weintraub
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obesity ,ancestry ,cardiovascular disease ,cancer ,disparity ,cardio-oncology ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Cardiovascular disease (CVD) and cancer often occur in the same individuals, in part due to the shared risk factors such as obesity. Obesity promotes adipose inflammation, which is pathogenically linked to both cardiovascular disease and cancer. Compared with Caucasians, the prevalence of obesity is significantly higher in African Americans (AA), who exhibit more pronounced inflammation and, in turn, suffer from a higher burden of CVD and cancer-related mortality. The mechanisms that underlie this association among obesity, inflammation, and the bidirectional risk of CVD and cancer, particularly in AA, remain to be determined. Socio-economic disparities such as lack of access to healthy and affordable food may promote obesity and exacerbate hypertension and other CVD risk factors in AA. In turn, the resulting pro-inflammatory milieu contributes to the higher burden of CVD and cancer in AA. Additionally, biological factors that regulate systemic inflammation may be contributory. Mutations in atypical chemokine receptor 1 (ACKR1), otherwise known as the Duffy antigen receptor for chemokines (DARC), confer protection against malaria. Many AAs carry a mutation in the gene encoding this receptor, resulting in loss of its expression. ACKR1 functions as a decoy chemokine receptor, thus dampening chemokine receptor activation and inflammation. Published and preliminary data in humans and mice genetically deficient in ACKR1 suggest that this common gene mutation may contribute to ethnic susceptibility to obesity-related disease, CVD, and cancer. In this narrative review, we present the evidence regarding obesity-related disparities in the bidirectional risk of CVD and cancer and also discuss the potential association of gene polymorphisms in AAs with emphasis on ACKR1.
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- 2021
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8. Contemporary National Patterns of Eligibility and Use of Novel Cardioprotective Antihyperglycemic Agents in Type 2 Diabetes Mellitus
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Arash A. Nargesi, Gini P. Jeyashanmugaraja, Nihar Desai, Kasia Lipska, Harlan Krumholz, and Rohan Khera
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cardioprotective medications ,diabetes mellitus ,GLP1‐RAs ,novel agents ,sodium glucose transporter‐2 inhibitors ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background SGLT‐2 (sodium glucose transporter‐2) inhibitors and GLP‐1RAs (glucagon‐like peptide‐1 receptor agonists) effectively lowered cardiovascular risk in large clinical trials for patients with type 2 diabetes mellitus at high risk for these complications, and have been recommended by guidelines. To evaluate the contemporary landscape in which these recommendations would be implemented, we examined the use of these medications according to clinical guideline practice. Methods and Results In the National Health and Nutrition Examination Survey for 2017 to 2018, we defined compelling indications for SGLT‐2 inhibitors by the presence of atherosclerotic cardiovascular disease, heart failure, or chronic kidney disease, and for GLP‐1RAs by the presence of established or high‐risk atherosclerotic cardiovascular disease, based on large clinical trials that have been incorporated in guideline recommendations of the American College of Cardiology and American Diabetes Association. We then evaluated use of these medications among patients with physician‐diagnosed type 2 diabetes mellitus. All analyses incorporated complex survey design to produce nationally representative estimates. A total 1104 of 9254 sampled individuals had type 2 diabetes mellitus, representing 10.6% (95% CI, 9.7%–11.6%) of the US population or 33.2 million adults nationally. Of these, 52.6% (95% CI, 47.7%–57.5%) had an indication for SGLT‐2 inhibitors, 32.8% (95% CI, 28.8%–37.2%) for GLP‐1RAs, and 26.6% (95% CI, 22.2%–31.7%) for both medications. During 2017 to 2018, 4.5% (95% CI, 2.4%–8.2%) were treated with SGLT‐2 inhibitors and 1.5% (95% CI, 0.7%–3.2%) with GLP‐1RAs. Atherosclerotic cardiovascular disease, heart failure, or chronic kidney disease were not independently associated with SGLT‐2 inhibitor or GLP‐1RA use in patients with diabetes mellitus. Conclusions Despite a large number of patients being eligible for guideline‐recommended cardiorenal protective therapies, there are substantial gaps in the use of SGLT‐2 inhibitors and GLP‐1RAs, limiting their public health benefits.
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- 2021
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9. Clinical characteristics and outcomes for 7,995 patients with SARS-CoV-2 infection.
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Jacob McPadden, Frederick Warner, H Patrick Young, Nathan C Hurley, Rebecca A Pulk, Avinainder Singh, Thomas J S Durant, Guannan Gong, Nihar Desai, Adrian Haimovich, Richard Andrew Taylor, Murat Gunel, Charles S Dela Cruz, Shelli F Farhadian, Jonathan Siner, Merceditas Villanueva, Keith Churchwell, Allen Hsiao, Charles J Torre, Eric J Velazquez, Roy S Herbst, Akiko Iwasaki, Albert I Ko, Bobak J Mortazavi, Harlan M Krumholz, and Wade L Schulz
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Medicine ,Science - Abstract
ObjectiveSevere acute respiratory syndrome virus (SARS-CoV-2) has infected millions of people worldwide. Our goal was to identify risk factors associated with admission and disease severity in patients with SARS-CoV-2.DesignThis was an observational, retrospective study based on real-world data for 7,995 patients with SARS-CoV-2 from a clinical data repository.SettingYale New Haven Health (YNHH) is a five-hospital academic health system serving a diverse patient population with community and teaching facilities in both urban and suburban areas.PopulationsThe study included adult patients who had SARS-CoV-2 testing at YNHH between March 1 and April 30, 2020.Main outcome and performance measuresPrimary outcomes were admission and in-hospital mortality for patients with SARS-CoV-2 infection as determined by RT-PCR testing. We also assessed features associated with the need for respiratory support.ResultsOf the 28605 patients tested for SARS-CoV-2, 7995 patients (27.9%) had an infection (median age 52.3 years) and 2154 (26.9%) of these had an associated admission (median age 66.2 years). Of admitted patients, 2152 (99.9%) had a discharge disposition at the end of the study period. Of these, 329 (15.3%) required invasive mechanical ventilation and 305 (14.2%) expired. Increased age and male sex were positively associated with admission and in-hospital mortality (median age 80.7 years), while comorbidities had a much weaker association with the risk of admission or mortality. Black race (OR 1.43, 95%CI 1.14-1.78) and Hispanic ethnicity (OR 1.81, 95%CI 1.50-2.18) were identified as risk factors for admission, but, among discharged patients, age-adjusted in-hospital mortality was not significantly different among racial and ethnic groups.ConclusionsThis observational study identified, among people testing positive for SARS-CoV-2 infection, older age and male sex as the most strongly associated risks for admission and in-hospital mortality in patients with SARS-CoV-2 infection. While minority racial and ethnic groups had increased burden of disease and risk of admission, age-adjusted in-hospital mortality for discharged patients was not significantly different among racial and ethnic groups. Ongoing studies will be needed to continue to evaluate these risks, particularly in the setting of evolving treatment guidelines.
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- 2021
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10. Cumulative Burden of Financial Hardship From Medical Bills Across the Spectrum of Diabetes Mellitus and Atherosclerotic Cardiovascular Disease Among Non‐Elderly Adults in the United States
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Reed Mszar, Gowtham R. Grandhi, Javier Valero‐Elizondo, César Caraballo, Rohan Khera, Nihar Desai, Salim S. Virani, Ron Blankstein, Michael J. Blaha, and Khurram Nasir
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atherosclerotic cardiovascular disease ,diabetes mellitus ,financial hardship ,medical bills ,outcomes ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Background Atherosclerotic cardiovascular disease (ASCVD) has a strong association with diabetes mellitus (DM), accounting for approximately two thirds of deaths in this patient population. Many individuals with ASCVD and DM are vulnerable to financial hardship associated with treatment‐related expenses. Therefore, we examined the burden of financial hardship from medical bills across the spectrum of ASCVD status with and without DM. Methods and Results Using data from the National Health Interview Survey from 2013 to 2017, we used logistic regression analysis to examine the association of ASCVD and DM status with financial hardship and an inability to pay medical bills from a representative sample of non‐elderly adults in the United States. Our study population consisted of 121 672 individuals. Approximately 3.1% of the weighted population had ASCVD, 5.6% had DM, and 1.3% had both ASCVD and DM. Nearly 50% of individuals with ASCVD and DM reported financial hardship from medical bills (23% being unable to pay medical bills at all), whereas ≈28% of those with neither ASCVD nor DM reported financial hardship from medical bills (8% being unable to pay medical bills at all). Individuals with concurrent ASCVD and DM had the highest relative odds of expressing an inability to pay at all when compared with those with neither condition (odds ratio, 2.69; 95% CI, 2.21–3.28). Conclusions Individuals with concurrent ASCVD and DM are at a disproportionately high risk of being unable to pay their medical bills. The findings provide strong evidence for developing more effective public health policies that protect vulnerable populations from financial hardship.
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- 2020
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11. COVID-19 in children with hematological disorders – Outcomes, impact on management, and the way forward
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Nihar Desai, Anshul Gupta, and Pankti Mehta
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Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Published
- 2021
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12. Clinical implications of differences between real world and clinical trial usage of left ventricular assist devices for end stage heart failure.
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Catherine Mezzacappa, Neal G Ravindra, Cesar Caraballo, Fouad Chouairi, P Elliott Miller, John-Ross D Clarke, Jadry Gruen, Makoto Mori, Megan McCullough, Clancy Mullan, Arnar Geirsson, Joseph G Rogers, Mohammad Anwer, Nihar Desai, and Tariq Ahmad
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Medicine ,Science - Abstract
ImportancePatient outcomes in heart failure clinical trials are generally better than those observed in real-world settings. This may be related to stricter inclusion and exclusion criteria in clinical trials.ObjectiveWe study sought to characterize the clinical implications of differences between patients in clinical trials and those in a real-world registry of patients receiving left ventricular assist devices (LVADs).Design, setting, and participantsThis retrospective cohort study included all patients in INTERMACS (the Interagency Registry for Mechanically Assisted Circulatory Support) who were implanted with an axial flow LVAD from 2010 to 2015 to allow for equivalent comparisons.Main outcomes and measuresDifferences in patient characteristics and 2-year rates of adverse outcomes with those reported in the ENDURANCE and MOMENTUM 3 clinical trials. Survival analyses were used to assess the relationships between prespecified patient factors and clinical outcomes.ResultsOf the 10,937 LVAD recipients identified in INTERMACS between 2010-2015, 44% met at least 1 clinical trial exclusion criterion. The 2-year incidence of stroke and death amongst LVAD recipients in INTERMACS and the landmark clinical trials differed significantly (PConclusions and relevanceMost exclusion criteria used in LVAD clinical trials did not afford a substantially greater risk to patients in the real-world setting. In the relatively infrequent cases of end stage renal disease, thrombocytopenia, respiratory failure, and need for ECMO, the risks and benefits of LVAD therapy need careful weighting and further study.
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- 2020
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13. Prediction of Adverse Events in Patients Undergoing Major Cardiovascular Procedures.
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Bobak Mortazavi, Nihar Desai, Jing Zhang, Andreas Coppi, Fred Warner, Harlan M. Krumholz, and Sahand Negahban
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- 2017
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14. Pragmatic randomized trial assessing the impact of digital health technology on quality of life in patients with heart failure: Design, rationale and implementation
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Angela M. Victoria‐Castro, Melissa Martin, Yu Yamamoto, Tariq Ahmad, Tanima Arora, Frida Calderon, Nihar Desai, Brett Gerber, Kyoung A. Lee, Daniel Jacoby, Hannah Melchinger, Andrew Nguyen, Melissa Shaw, Michael Simonov, Alyssa Williams, Jason Weinstein, and Francis P. Wilson
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Heart Failure ,Self Care ,Digital Technology ,Biomedical Technology ,Quality of Life ,Humans ,General Medicine ,Cardiology and Cardiovascular Medicine - Abstract
Self-care and patient engagement are important elements of heart failure (HF) care, endorsed in the guidelines. Digital health tools may improve quality of life (QOL) in HF patients by promoting care, knowledge, and engagement. This manuscript describes the rationale and challenges of the design and implementation of a pragmatic randomized controlled trial to evaluate the efficacy of three digital health technologies in improving QOL for patients with HF.We hypothesize that digital health interventions will improve QOL of HF patients through the early detection of warning signs of disease exacerbation, the opportunity of self-tracking symptoms, and the education provided, which enhances patient empowerment.Using a fully electronic enrollment and consent platform, the trial will randomize 200 patients across HF clinics in the Yale New Haven Health system to receive either usual care or one of three digital technologies designed to promote self-management and provide critical data to clinicians. The primary outcome is the change in QOL as assessed by the Kansas City Cardiomyopathy Questionnaire at 3 months.First enrollment occurred in September 2021. Recruitment was anticipated to last 6-8 months and participants were followed for 6 months after randomization. Our recruitment efforts have highlighted the large digital divide in our population of interest.Assessing clinical outcomes, patient usability, and ease of clinical integration of digital technologies will be beneficial in determining the feasibility of the integration of such technologies into the healthcare system.
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- 2022
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15. Outbreak of Ralstonia mannitolilytica Infection in Hemato-Oncology Unit: Case Series and Review of Literature
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Priyanka Chauhan, Anshul Gupta, Chinmoy Sahu, Nihar Desai, and Soniya Nityanand
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Oncology ,Pediatrics, Perinatology and Child Health - Abstract
Ralstonia mannitolilytica is a Gram-negative, nonfermentative, soil bacterium that is reported to cause opportunistic infections in immunocompromised patients in nosocomial settings. After extensive review of literature, it was found that this is second outbreak reported from India. This study is a retrospective analysis of the clinical features, outcome, and source identification of R. mannitolilytica infection outbreak in a hemato-oncology unit of a tertiary care center of North India between February 2020 and March 2020. We report an outbreak of R. mannitolilytica bacteremia (with or without septic shock) in five patients admitted in hemato-oncology unit at a tertiary care institute in North India for 1 month period. Four patients were cured after administration of appropriate antibiotics as per sensitivity reports, while one patient died of septicemia due to delayed diagnosis. Environmental cultures revealed multidose saline bottles used for administration of drugs as the source of outbreak. Following implementation of use of single dose diluents and flushing solutions in patients with central venous catheter, no new case was reported. Clinicians and microbiologists should keep high index of suspicion to identify these organisms as timely diagnosis is the only key to improve outcomes.
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- 2022
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16. Risk Prediction for Heart Failure Patients Admitted to the Intensive Care Unit
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Kyle D. O’Connor, Yu Yamamoto, Sounok Sen, Marc D. Samsky, F. Perry Wilson, Nihar Desai, Tariq Ahmad, and Michael A. Fuery
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Cardiology and Cardiovascular Medicine - Published
- 2023
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17. Favorable Modifiable Cardiovascular Risk Profile Is Associated With Lower Healthcare Costs Among Cancer Patients: The 2012–2013 Medical Expenditure Panel Survey
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Jai Singh, Javier Valero‐Elizondo, Joseph A. Salami, Haider J. Warraich, Oluseye Ogunmoroti, Erica S. Spatz, Nihar Desai, Jamal S. Rana, Salim S. Virani, Ron Blankstein, Michael J. Blaha, and Khurram Nasir
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cancer ,cardiovascular disease risk factors ,cost ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
BackgroundAtherosclerotic cardiovascular disease (ASCVD) and cancer are among the leading causes of economic burden, morbidity, and mortality in the United States. We aimed to quantify the overall impact of cardiovascular modifiable risk factor (CRF) profile on healthcare expenditures among those with and without ASCVD and/or cancer. Methods and ResultsThe 2012–2013 Medical Expenditure Panel Survey, a nationally representative adult sample (≥40 years), was utilized for the study. Variables included ASCVD, CRF (hypertension, diabetes mellitus, hypercholesterolemia, smoking, physical activity and/or obesity), and cancer (all). Two‐part econometric models analyzed cost data. Medical Expenditure Panel Survey participants (n=27 275, 59±9 years, 52% female) were studied and 14% had cancer, translating to 25.6 million US adults over 40 years of age. A higher prevalence of ASCVD was noted in those with versus without cancer (25% versus 14%). Absence of ASCVD and a more favorable CRF profile were associated with significantly lower expenditures across the spectrum of cancer diagnosis. Among cancer patients, the adjusted mean annual cost for those with and without ASCVD were $10 852 (95% confidence interval [8917, 12 788]) and $6436 (95% confidence interval [5531, 7342]). Among cancer patients without ASCVD, adjusted annual healthcare expenditures among those with optimal versus poor CRF profile were $4782 and $7256. ConclusionsIn a nationally representative US adult population, absence of ASCVD and a favorable CRF profile were associated with significantly lower medical expenditure among cancer patients. This provides estimates to continue better cardiovascular management and prevention practices, while contextualizing the burden of cancer.
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- 2018
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18. Inequalities in the career pathway for paediatric HSCT and cellular therapy physicians
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Carmelo, Gurnari, Spadea, Manuela, Rafaella, Muratori, Valentine, Jimenez, Vera, Radici, Sheila, Torrado, Nihar, Desai, Julio, Ropero, Ibrahim, N Muhsen, Azada, Ibrahimova, Justin Du Toit, Candice Laverne Hendricks, Nico, Gagelmann, and Claire, Horgan
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- 2023
19. A Peculiar ST Elevation Mimicking STEMI
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Jose Victor Jimenez, Soumya Banna, and Nihar Desai
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Internal Medicine - Abstract
This case report describes a patient in their 60s who presented to the emergency department with a 2-week history of shortness of breath and back pain exacerbated that morning.
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- 2022
20. Clinical profile and outcome of COVID-19 in haematological malignancies: experience from tertiary care centre in India
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Nihar Desai, Sanjeev, Soniya Nityanand, Mansi Gupta, Anshul Gupta, Zia Hashim, and Priyanka Chauhan
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Adult ,Male ,medicine.medical_specialty ,Adolescent ,medicine.medical_treatment ,Secondary infection ,Population ,India ,Tertiary Care Centers ,Young Adult ,Internal medicine ,medicine ,Humans ,Haematological malignancies ,Prospective Studies ,Mortality ,education ,Aged ,Aged, 80 and over ,Mechanical ventilation ,education.field_of_study ,Leukemia ,Hematology ,SARS-CoV-2 ,Tertiary Healthcare ,business.industry ,Mortality rate ,COVID-19 ,General Medicine ,Middle Aged ,Prognosis ,Respiration, Artificial ,Log-rank test ,Treatment Outcome ,Risk factors ,Hematologic Neoplasms ,Cohort ,Original Article ,Female ,Observational study ,business - Abstract
There is limited evidence on various clinical aspects of SARS-CoV-2 infection in patients with haematological cancers. The risk factors, prognosis, and outcome of patients with haematological cancers with coexistent COVID-19 need to be explored in different subsets of population. A single-institutional prospective observational study was conducted at a tertiary level medical institute in North India. The clinical details of the recruited patients having haematological malignancies and diagnosed with COVID-19 between 15 March 2020 and 31 May 2021 were prospectively collected through the electronic patient database system. The outcomes with respect to 28-day and 56-day mortality and the associated risk factors for prognostication were analysed. Of the 5750 hospital admissions (inpatient and day-care) during the study period, two hundred and forty-two patients (4.2%) were diagnosed with COVID-19. Acute leukaemia was the most common haematological malignancy, seen in 117 (48.3%) patients. Eighty-nine (36.8%) patients had moderate-to-severe COVID-19 while 153 (63.2%) patients presented with mild infection. The 28-day and 56-day mortality rates in our cohort were 13.3% and 19.8% respectively. Amongst the risk factors associated with poor outcome, the severity of COVID-19 (HR = 1.8, 95% CI 1.16-10.35; p = 0.04), presence of secondary infection (HR = 2.1, 95% CI 2.45-21.3; p = 0.023), and need for invasive mechanical ventilation (HR = 2.3, 95% CI 1.8-18.43; p = 0.01) were prognostically significant on multivariate log rank analysis. The risk of SARS-CoV-2 infection does not increase with haematological malignancies; however, the outcome remains poor in patients with severe COVID-19, requirement of invasive mechanical ventilation, and pre-existing bacterial/fungal infection at presentation.
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- 2021
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21. Adverse drug effects across patients with heart failure: a systematic review
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Michael, Butzner, Ralph J, Riello, Phil, Sarocco, and Nihar, Desai
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Adult ,Heart Failure ,Angiotensin Receptor Antagonists ,Cough ,Drug-Related Side Effects and Adverse Reactions ,Adrenergic beta-Antagonists ,Bradycardia ,Humans ,Hyperkalemia ,Angiotensin-Converting Enzyme Inhibitors ,Stroke Volume ,Dizziness ,Mineralocorticoid Receptor Antagonists - Abstract
To summarize published literature on the incidence of adverse drug effects (ADEs) associated with guideline-directed medical therapy (GDMT) for patients with heart failure with reduced ejection fraction (HFrEF).Systematic literature review.A systematic literature review was conducted in PubMed, Ovid MEDLINE, and Clinical Key covering January 1990 to December 2018. Key search terms were ADEs for β-blockers (BBs), ACE inhibitors (ACEis), angiotensin receptor blockers (ARBs), mineralocorticoid receptor antagonists (MRAs), and/or angiotensin receptor-neprilysin inhibitors (ARNis) in adult patients (≥ 18 years) with HFrEF.A total of 279 eligible articles were identified, of which 29 reported drug-related adverse effects and were included in this review. Of the 29 studies, 11 examined BBs; 9, MRAs; 6, ARNis; 2, ACEis; and 1, ARBs. The most common reported ADEs across these therapeutic classes included bradycardia, dizziness, hypotension, hyperkalemia, cough, and renal impairment. The incidence of BB-induced bradycardia was 1% to 52% based on 9 studies, and 6 studies described dizziness as a result of BBs and ARNis (15%-43%). Fourteen studies reported induced hypotension (1.4%-63%); 13 studies, hyperkalemia (0.6%-30.2%); 3 studies, cough (37%-50%); and 4 studies, renal impairment (0.6%-7.6%).Findings show that drug-related adverse effects are commonly reported in clinical trials and highlight the sizable burden of ADEs with medical therapy across patients with HFrEF. Additional real-world evidence and studies aiming to improve the tolerability of GDMT for patients with HFrEF are warranted.
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- 2022
22. Reimagining Evidence Generation for Heart Failure and the Role of Integrated Health Care Systems
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Tariq Ahmad and Nihar Desai
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Heart Failure ,Angiotensin Receptor Antagonists ,Drug Combinations ,Delivery of Health Care, Integrated ,Humans ,Neprilysin ,Stroke Volume ,Cardiology and Cardiovascular Medicine - Published
- 2022
23. Impact Of Digital Health Interventions In The Quality Of Life Of Patients With Heart Failure: A Randomized Trial
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Angela M. Victoria Castro, Melissa L. Martin, Nihar Desai, Tariq Ahmad, Yu Yamamoto, Hannah Melchinger, Kyoung A. Lee, Brett Gerber, Andrew Nguyen, Jason Weinstein, Labeebah Subair, Veronica Lee, Alyssa Williams, Melissa Shaw, Tanima Arora, and Francis P. Wilson
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Cardiology and Cardiovascular Medicine - Published
- 2023
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24. Clinical Implications of Cluster Analysis-Based Classification of Acute Decompensated Heart Failure and Correlation with Bedside Hemodynamic Profiles.
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Tariq Ahmad, Nihar Desai, Francis Wilson, Phillip Schulte, Allison Dunning, Daniel Jacoby, Larry Allen, Mona Fiuzat, Joseph Rogers, G Michael Felker, Christopher O'Connor, and Chetan B Patel
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Medicine ,Science - Abstract
BACKGROUND:Classification of acute decompensated heart failure (ADHF) is based on subjective criteria that crudely capture disease heterogeneity. Improved phenotyping of the syndrome may help improve therapeutic strategies. OBJECTIVE:To derive cluster analysis-based groupings for patients hospitalized with ADHF, and compare their prognostic performance to hemodynamic classifications derived at the bedside. METHODS:We performed a cluster analysis on baseline clinical variables and PAC measurements of 172 ADHF patients from the ESCAPE trial. Employing regression techniques, we examined associations between clusters and clinically determined hemodynamic profiles (warm/cold/wet/dry). We assessed association with clinical outcomes using Cox proportional hazards models. Likelihood ratio tests were used to compare the prognostic value of cluster data to that of hemodynamic data. RESULTS:We identified four advanced HF clusters: 1) male Caucasians with ischemic cardiomyopathy, multiple comorbidities, lowest B-type natriuretic peptide (BNP) levels; 2) females with non-ischemic cardiomyopathy, few comorbidities, most favorable hemodynamics; 3) young African American males with non-ischemic cardiomyopathy, most adverse hemodynamics, advanced disease; and 4) older Caucasians with ischemic cardiomyopathy, concomitant renal insufficiency, highest BNP levels. There was no association between clusters and bedside-derived hemodynamic profiles (p = 0.70). For all adverse clinical outcomes, Cluster 4 had the highest risk, and Cluster 2, the lowest. Compared to Cluster 4, Clusters 1-3 had 45-70% lower risk of all-cause mortality. Clusters were significantly associated with clinical outcomes, whereas hemodynamic profiles were not. CONCLUSIONS:By clustering patients with similar objective variables, we identified four clinically relevant phenotypes of ADHF patients, with no discernable relationship to hemodynamic profiles, but distinct associations with adverse outcomes. Our analysis suggests that ADHF classification using simultaneous considerations of etiology, comorbid conditions, and biomarker levels, may be superior to bedside classifications.
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- 2016
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25. A dynamic model to estimate evolving risk of major bleeding after percutaneous coronary intervention
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Nathan C Hurley, Nihar Desai, Sanket S. Dhruva, Rohan Khera, Wade Schulz, Chenxi Huang, Jeptha Curtis, Frederick Masoudi, John Rumsfeld, Sahand Negahban, Harlan M. Krumholz, and Bobak J. Mortazavi
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BackgroundBleeding is a complication of percutaneous coronary intervention (PCI), leading to significant morbidity, mortality, and cost. Existing risk models produce a single estimate of bleeding risk anchored at a single point in time and do not update estimates as clinical information emerges, despite the dynamic nature of risk.ObjectiveWe sought to develop models that update estimates of bleeding risk over time, incorporating evolving clinical information, and to demonstrate updated predictive performance.MethodsUsing data available from the National Cardiovascular Data Registry (NCDR) CathPCI, we trained 6 different tree-based machine learning models to estimate the risk of bleeding at key decision points: 1) choice of access site, 2) prescription of medication prior to PCI, and 3) the choice of closure device.ResultsWe included 2,868,808 PCIs; 2,314,446 (80.7%) prior to 2014 for training and 554,362 (19.3%) remaining for validation. Discrimination improved from an AUROC of 0.812 (95% Confidence Interval: 0.812-0.812) using only presentation variables to 0.845 (0.845-0.845) using all variables. Among 123,712 patients classified as low risk by the initial model, 14,441 were reclassified as moderate risk (1.4% experienced bleeds), while 723 were reclassified as high risk (12.5% experienced bleeds). Among 160,165 patients classified as high risk by the initial model, 40 were reclassified to low risk (0% experienced bleeds), and 43,265 to moderate risk (2.5% experienced bleeds).ConclusionAccounting for the time-varying nature of data and capturing the association between treatment decisions and changes in risk provide up-to-date information that may guide individualized care throughout a hospitalization.Condensed AbstractExisting risk models for bleeding with PCI produce a single estimate anchored at a single point in time. We developed models that update estimates of bleeding risk over time, incorporating evolving clinical information, using data available from the National Cardiovascular Data Registry (NCDR) CathPCI. We trained 6 different machine learning models to estimate the risk of bleeding at key decision points, improving discrimination from an AUROC of 0.812 to 0.845, over time. Accounting for the time-varying nature of data and capturing association between treatments and changes in risk provide up-to-date information that may guide individualized care throughout a hospitalization.
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- 2021
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26. Cardiovascular safety profile of taxanes and vinca alkaloids: 30 years FDA registry experience
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Akshee Batra, Brijesh Patel, Daniel Addison, Lauren A Baldassarre, Nihar Desai, Neal Weintraub, Anita Deswal, Zeeshan Hussain, Sherry-Ann Brown, Sarju Ganatra, Vivek Agarwala, Purvish M Parikh, Michael Fradley, Arjun Ghosh, and Avirup Guha
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Adult ,Male ,Adolescent ,Young Adult ,Neoplasms ,Adverse Drug Reaction Reporting Systems ,Humans ,Registries ,outcome assessment ,Vinca Alkaloids ,Aged ,drug monitoring ,Aged, 80 and over ,United States Food and Drug Administration ,Incidence ,healthcare ,Middle Aged ,Cardiotoxicity ,United States ,Special Populations ,Cardiovascular Diseases ,epidemiology ,Female ,Taxoids ,Cardiology and Cardiovascular Medicine - Abstract
ObjectiveAntimicrotubular agents are among the most commonly used classes of chemotherapeutic agents, but the risk of cardiovascular adverse events (CVAEs) remains unclear. Our objective was to study the CVAEs associated with antimicrotubular agents.MethodsThe Food and Drug Administration’s Adverse Event Reporting System was used to study CVAEs in adults from 1990 to 2020. Reported single-agent (only taxane or vinca alkaloid) CVAEs were compared with combination therapy (with at least one of the four major cardiotoxic drugs: anthracycline, HER2Neu inhibitors, tyrosine kinase inhibitors and checkpoint inhibitors) using adjusted polytomous logistic regression.ResultsOver 30 years, 134 398 adverse events were reported, of which 18 426 (13.4%) were CVAEs, with 74.1% due to taxanes and 25.9% due to vinca alkaloids. In 30 years, there has been a reduction in the proportion of reported CVAEs for taxanes from 15% to 11.8% (Cochran-Armitage P-trends ConclusionsAntimicrotubular agents are associated with CVAEs, especially in combination chemotherapy regimens. Based on this study, we suggest routine cardiovascular assessment of patients with cancer before initiating antimicrotubular agents in combination therapy.
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- 2021
27. Sex Differences in Ablation Strategy, Lesion Sets, and Complications of Catheter Ablation for Atrial Fibrillation: An Analysis From the GWTG-AFIB Registry
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Fahd N. Yunus, Alexander C. Perino, DaJuanicia N. Holmes, Roland A. Matsouaka, Anne B. Curtis, Kenneth A. Ellenbogen, David S. Frankel, Bradley P. Knight, Andrea M. Russo, William R. Lewis, Jonathan P. Piccini, Mintu P. Turakhia, John Day, Nihar Desai, Gregory K. Feld, Gregg C. Fonarow, Jodie L. Hurwitz, Jose Joglar, Kevin Sheth, and Mandeep Sidhu
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Male ,medicine.medical_specialty ,medicine.medical_treatment ,Catheter ablation ,Lesion ,Postoperative Complications ,Sex Factors ,Physiology (medical) ,Internal medicine ,Atrial Fibrillation ,medicine ,Humans ,Sex Distribution ,Vein ,Aged ,Retrospective Studies ,business.industry ,Incidence ,Atrial fibrillation ,Middle Aged ,medicine.disease ,Ablation ,United States ,medicine.anatomical_structure ,Practice Guidelines as Topic ,Cardiology ,Catheter Ablation ,Female ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,business ,Follow-Up Studies - Abstract
Background: When presenting for atrial fibrillation (AF) ablation, women, compared with men, tend to have more nonpulmonary vein triggers and advanced atrial disease. Whether this informs differences in AF ablation strategy is not well described. We aimed to characterize ablation strategy and complications by sex, using the Get With The Guidelines-AF registry. Methods: From the Get With The Guidelines-AF registry ablation feature, we included patients who underwent initial AF ablation procedure between January 7, 2016, and December 27, 2019. Patients were stratified based on AF type (paroxysmal versus nonparoxysmal) and sex. We compared patient demographics, ablation strategy, and complications by sex. Results: Among 5356 patients from 31 sites who underwent AF ablation, 1969 were women (36.8%). Women, compared with men, were older (66.8±9.6 versus 63.4±10.6, P P P =0.0002; inferior mitral isthmus line: 10.2% versus 7.0%, P =0.01; floor line: 46.1% versus 40.6%, P =0.02) than in men. In multivariable analysis, the association between patient sex and complications from ablation was not statistically significant. Conclusions: In this US wide AF ablation quality improvement registry, women with nonparoxysmal AF were more likely to receive adjunctive lesion sets compared with men. These findings suggest that patient sex may inform ablation strategy in ways that may not be strongly supported by evidence and emphasize the need to clarify optimal ablation strategies by sex.
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- 2021
28. Trends In US Heart Failure Hospitalizations: Increased Volume And Patient Diversity With Decreased Total Costs, 2008-2018
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Samuel W. Reinhardt, Katherine Clark, Fouad Chouairi, Elliott Miller, Bradley Kay, Michael Fuery, Avirup Guha, Tariq Ahmad, and Nihar Desai
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Cardiology and Cardiovascular Medicine - Published
- 2022
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29. National Trends in Hospital Readmission Rates among Medicare Fee-for-Service Survivors of Mitral Valve Surgery, 1999-2010.
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John A Dodson, Yun Wang, Karthik Murugiah, Kumar Dharmarajan, Zack Cooper, Sabet Hashim, Sudhakar V Nuti, Erica Spatz, Nihar Desai, and Harlan M Krumholz
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Medicine ,Science - Abstract
Older patients who undergo mitral valve surgery (MVS) have high 1-year survival rates, but little is known about the experience of survivors. Our objective was to determine trends in 1-year hospital readmission rates and length of stay (LOS) in these individuals.We included 100% of Medicare Fee-for-Service patients ≥65 years of age who underwent MVS between 1999-2010 and survived to 1 year (N = 146,877). We used proportional hazards regression to analyze the post-MVS 1-year readmission rate in each year, mean hospital LOS (after index admission), and readmission rates by subgroups (age, sex, race).The 1-year survival rate among patients undergoing MVS was 81.3%. Among survivors, 49.1% experienced a hospital readmission within 1 year. The post-MVS 1-year readmission rate declined from 1999-2010 (49.5% to 46.9%, P
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- 2015
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30. B-45 | Approval, Evidence, and 'Off-Label' Device Utilization: The Patent Foramen Ovale Story
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Dr. Andrew Michael Goldsweig, Yihong Deng, Xiaoxi Yao, Herb D. Aronow, David J. Cohen, Nihar Desai, Steven R. Messe, Joseph S. Ross, Alexandra J. Lansky, and Samuel T. Savitz
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- 2022
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31. Patient Phenotypes and SGLT-2 Inhibition in Type 2 Diabetes: Insights From the EMPA-REG OUTCOME Trial
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Abhinav, Sharma, Anne Pernille, Ofstad, Tariq, Ahmad, Bernard, Zinman, Isabella, Zwiener, David, Fitchett, Christoph, Wanner, Jyothis T, George, Stefan, Hantel, Nihar, Desai, and Robert J, Mentz
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Heart Failure ,Phenotype ,Treatment Outcome ,Diabetes Mellitus, Type 2 ,Double-Blind Method ,Cardiovascular Diseases ,Humans ,Female ,Sodium-Glucose Transporter 2 Inhibitors - Abstract
Using latent class analysis (LCA) of EMPA-REG OUTCOME (BI 10773 [Empagliflozin] Cardiovascular Outcome Event Trial in Type 2 Diabetes Mellitus Patients), this study identified distinct phenotypes in subjects with type 2 diabetes (T2D) and cardiovascular (CV) disease and explored treatment effects across phenotypes.In the EMPA-REG OUTCOME trial, empagliflozin reduced risk of CV death or hospitalization for heart failure (HHF) by 34% in subjects with T2D and CV disease. Among such subjects, there has been limited evaluation of clinical phenotypes.Overall, 7,020 participants were treated with empagliflozin 25 mg, 10 mg, or placebo. For this post hoc analysis, participants were randomly separated into training (two-thirds of patients) and validation (remaining one-third) sets. LCA identified 3 phenotype groups (n = 6,639 with complete data). The phenotype association with CV death or HHF and empagliflozin treatment effect across groups was explored by Cox regression (in training and validation sets).In the training set, phenotype group 1 (n = 1,463; 33.1%) included younger patients with shorter T2D duration and the highest estimated glomerular filtration rate (eGFR). Phenotype group 2 (n = 1,172; 26.5%) included more women with non-coronary artery disease. Phenotype group 3 (n = 1,785; 40.4%) included older patients with advanced coronary disease and the lowest eGFR. The risk of CV death varied across phenotypes (group 2 vs. 1: hazard ratio [HR]; 1.83; 95% confidence interval [CI]: 1.23 to 2.71; group 3 vs. 1: HR: 1.86; 95% CI: 1.30 to 2.67) with similar patterns for CV death or HHF. Consistent treatment effects of empagliflozin were seen across phenotypes in the training and validation sets (interaction p0.30).Among participants with T2D, this study identified 3 phenotypes with varying CV risk. The treatment effect across phenotypes reaffirms the robustness of CV death or HHF reduction with empagliflozin. (BI 10773 [Empagliflozin] Cardiovascular Outcome Event Trial in Type 2 Diabetes Mellitus Patients [EMPA-REG OUTCOME]; NCT01131676).
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- 2021
32. 1158-P: Cost-Effectiveness of Empagliflozin vs. Liraglutide as Second-Line Therapy for Type 2 Diabetes in the United States
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Sarah Brand, Sharash Shetty, Odette Reifsnider, Matthew Stargardter, Pratik Pimple, and Nihar Desai
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medicine.medical_specialty ,business.industry ,Liraglutide ,Cost effectiveness ,Endocrinology, Diabetes and Metabolism ,United Kingdom Prospective Diabetes Study ,Hazard ratio ,Lira ,Clinical trial ,Emergency medicine ,Internal Medicine ,Empagliflozin ,Medicine ,business ,Adverse effect ,medicine.drug - Abstract
Background: The ADA’s “Standards of Medical Care in Diabetes” recommends use of an SGLT2 inhibitor or GLP-1 receptor agonist as one of the six drug classes after metformin (MET) in T2D patients. These therapies are preferred among T2D patients with cardiovascular disease (CVD) based on clinical trial results demonstrating significant improvement in clinical outcomes. We sought to examine the economic implications of sequential use of these therapies. Methods: An economic simulation model evaluating treatment in U.S. T2D patients after MET with empagliflozin (EMPA) as 2nd line and liraglutide (LIRA) as 3rd line vs. LIRA as 2nd line and EMPA as 3rd line was used to estimate the lifetime health and cost outcomes of T2D-related complications and adverse events (AEs). Complications, including CV death, myocardial infarction, stroke, and renal outcomes, were predicted using United Kingdom Prospective Diabetes Study risk equations and EMPA-REG OUTCOME data. A meta-analysis informed treatment-induced changes in HbA1c, SBP, and weight in patients without CVD. For each complication in patients with CVD, an indirectly estimated hazard ratio of LIRA vs. EMPA was applied. Costs ($2019), AE rates, and utilities were sourced from published literature. Results: Compared with LIRA as 2nd line, use of EMPA added 0.32 quality-adjusted life-years (QALYs) and led to lower lifetime costs (by $11,422/patient), suggesting dominance over 2nd line LIRA (improved health outcomes at lower cost). These results were similar across CVD subgroups. Patients with CVD at baseline compared to those without CVD showed larger gains in incremental QALYs (0.42 with CVD, 0.29 without CVD) with somewhat lower cost savings (by $9,550, $12,392, respectively) for 2nd line EMPA vs. LIRA, showing dominance in both subpopulations. Conclusion: For T2D patients with and without CVD, the use of EMPA on background MET was a dominant strategy for U.S. payers, associated with improved outcomes and lower costs as compared with LIRA. Disclosure O. Reifsnider: Consultant; Self; Boehringer Ingelheim International GmbH, Boehringer Ingelheim Pharmaceuticals, Inc. P. Pimple: Employee; Self; Boehringer Ingelheim Pharmaceuticals, Inc. Employee; Spouse/Partner; CVS Caremark. M.J.D. Stargardter: Consultant; Self; Boehringer Ingelheim International GmbH, Boehringer Ingelheim Pharmaceuticals, Inc. S. Brand: Consultant; Self; Boehringer Ingelheim International GmbH, Boehringer Ingelheim Pharmaceuticals, Inc. N. Desai: None. S. Shetty: Employee; Self; Boehringer Ingelheim Pharmaceuticals, Inc.
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- 2020
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33. 1144-P: Patient Phenotypes and SGLT2 Inhibition in Type 2 Diabetes Mellitus: Insights from the EMPA-REG OUTCOME Trial
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Abhinav Sharma, Bernard Zinman, Robert J. Mentz, Isabella Zwiener, Tariq Ahmad, Anne Pernille Ofstad, J. George, Stefan Hantel, C Wanner, Nihar Desai, and David H. Fitchett
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medicine.medical_specialty ,Reduced risk ,Complete data ,Training set ,business.industry ,Endocrinology, Diabetes and Metabolism ,Atherosclerotic disease ,Older patients ,Family medicine ,Internal Medicine ,medicine ,Empagliflozin ,Treatment effect ,In patient ,business - Abstract
In EMPA-REG OUTCOME, empagliflozin (EMPA) reduced risk of cardiovascular (CV) death by 38% and hospitalization for heart failure (HHF) by 35% in patients with type 2 diabetes (T2D) and CV disease. We aimed to identify phenotypes of patients with different risk of outcomes and to explore treatment effects across these groups. Overall, 7020 patients were treated with EMPA 25, 10 mg or placebo (PBO). For this post-hoc analysis, patients were randomly separated into training (2/3) and validation sets (1/3 of patients). Latent class analysis identified 3 clusters using 6639 patients with complete data. The association of clusters to CV death and CV death/HHF, and treatment effect of EMPA vs. PBO across clusters was explored by Cox regression. Cluster 1 included younger patients with shorter T2D duration. Cluster 2 included more women with non-coronary atherosclerotic disease (CAD), and Cluster 3 older patients with advanced CAD. In the training set, risk of CV death varied across clusters (Cluster 2 vs. 1 HR 1.83 [95% CI 1.23, 2.71], Cluster 3 vs. 1 HR 1.86 [1.30, 2.67]) with similar pattern for CV death/HHF. Treatment effect of EMPA was consistent across clusters (Figure). Results were replicated in the validation set. We identified 3 phenotypes of patients with varying risk of outcomes. The consistent treatment effect across clusters reaffirms the robustness of CV death/HHF reduction with EMPA. Disclosure A. Sharma: Advisory Panel; Self; Boehringer Ingelheim International GmbH, Roche Pharma. Research Support; Self; Bristol-Myers Squibb, Merck & Co., Inc. Speaker’s Bureau; Self; Novartis Pharmaceuticals Corporation. A. Ofstad: Employee; Self; Boehringer Ingelheim International GmbH. T. Ahmad: None. B. Zinman: Advisory Panel; Self; Abbott, Boehringer Ingelheim International GmbH, Eli Lilly and Company, Janssen Pharmaceuticals, Inc., Merck Sharp & Dohme Corp., Novo Nordisk Inc., Sanofi-Aventis. I. Zwiener: Employee; Self; Boehringer Ingelheim International GmbH. D.H. Fitchett: Consultant; Self; AstraZeneca, Boehringer Ingelheim International GmbH. Speaker’s Bureau; Self; Lilly Diabetes. Other Relationship; Self; Novo Nordisk Inc. C. Wanner: Advisory Panel; Self; Eli Lilly and Company, Merck & Co., Inc., Mundipharma International. Consultant; Self; Boehringer Ingelheim (Canada) Ltd., Sanofi Genzyme. Speaker’s Bureau; Self; AstraZeneca. Other Relationship; Self; Boehringer Ingelheim International GmbH. J.T. George: Employee; Self; Boehringer Ingelheim International GmbH. S. Hantel: Employee; Self; Boehringer Ingelheim Pharma GmbH & Co. KG. N. Desai: None. R.J. Mentz: Consultant; Self; Amgen, AstraZeneca, Bayer Healthcare Pharmaceuticals Inc., Boehringer Ingelheim Pharmaceuticals, Inc., Merck & Co., Inc., Novartis Pharmaceuticals Corporation, Sanofi. Research Support; Self; GlaxoSmithKline plc. Funding Boehringer Ingelheim and Eli Lilly and Company Diabetes Alliance
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- 2020
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34. Projecting the Long-term Clinical Value of Mavacamten for the Treatment of Obstructive Hypertrophic Cardiomyopathy in the United States: An Assessment of Net Health Benefit
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Nihar Desai, Jipan Xie, Yan Wang, Megan B. Sutton, John Whang, Jennifer T. Fine, and Louis P. Garrison
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Male ,Pharmacology ,Benzylamines ,Adrenergic beta-Antagonists ,Cardiomyopathy, Hypertrophic ,Middle Aged ,Calcium Channel Blockers ,United States ,Treatment Outcome ,Clinical Trials, Phase III as Topic ,Quality of Life ,Humans ,Female ,Pharmacology (medical) ,Uracil - Abstract
The aim of the study was to project the long-term net health benefits of mavacamten for the treatment of symptomatic obstructive hypertrophic cardiomyopathy (HCM) in the United States.A Markov model with 4 mutually exclusive health states (New York Heart Association [NYHA] functional classes I, II, and III/IV and death) was developed to project the life-years (LYs) and quality-adjusted life-years (QALYs) over a lifetime horizon for patients with symptomatic obstructive HCM receiving mavacamten with or without β-blocker (BB) or calcium channel blocker (CCB) monotherapy or placebo with or without BB or CCB monotherapy. The model simulated a patient cohort with a starting age of 59 years and 41% women. Transition probabilities across NYHA functional classes were estimated using data from the Phase III Clinical Study to Evaluate Mavacamten (MYK-461) in Adults With Symptomatic Obstructive Hypertrophic Cardiomyopathy (EXPLORER-HCM) and the EXPLORER long-term extension (EXPLORER-LTE) cohort from the Long-term Safety Extension Study of Mavacamten in Adults who Have Completed MAVERICK-HCM or EXPLORER-HCM (MAVA-LTE) trial and were extrapolated after week 30. The mortality risks of NYHA functional class I were assumed to be the age- and sex-specific mortality risks of the US general population. The mortality risks for NYHA class II and III/IV were estimated using those for class I in conjunction with the relative mortality risks derived using patients with obstructive HCM from a large real-world registry. Health state utilities for each treatment were estimated from EXPLORER-HCM. Both LYs and QALYs were aggregated over a lifetime for each treatment arm, discounted at 3% annually, and compared between the 2 arms. Sensitivity analyses were conducted to evaluate the robustness of the model findings.Over a lifetime, treatment with mavacamten with or without BB or CCB monotherapy was associated with 3.67 incremental LYs compared with placebo with or without BB or CCB monotherapy (13.00 vs 9.33 LYs). Compared with individuals in the placebo group, patients in the mavacamten group were projected to spend 6.17 additional LYs in NYHA functional class I and 0.04 and 2.46 fewer LYs in NYHA functional classes II and III/IV, respectively. With utilities incorporated, mavacamten with or without BB or CCB monotherapy was associated with 4.17 additional QALYs compared with placebo with or without BB or CCB monotherapy (11.74 vs 7.57 QALYs). In the sensitivity analyses, incremental benefits ranged from 1.55 to 6.21 LYs and from 2.48 to 6.19 QALYs across the scenarios.This model projected substantial net health benefits associated with mavacamten for symptomatic obstructive HCM owing to improved patient survival and quality of life. The projected QALY gain underscored the likely long-term clinical value of mavacamten in symptomatic obstructive HCM.
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- 2022
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35. Bonded Repairs of Composite Panels Representative of Wing Structure
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Nihar Desai, Erick Espinar-Mick, Michael Fleming, Reewanshu Chadha, Paul Swindell, John G. BakuckasJr., Jeong-Beom Ihn, John Z. Lin, and Mark Freisthler
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Residual strength ,Wing ,Test fixture ,business.industry ,Computer science ,Composite number ,Limit load ,Structural engineering ,Composite laminates ,Track (rail transport) ,business ,Beam (structure) - Abstract
In a collaborative effort, the Federal Aviation Administration (FAA) and the Boeing Company are assessing bonded repair technology of composite panels representative of transport airplane wing structure through test and analysis using the FAA’s Aircraft Beam Structural Test fixture. Emphasis has been placed on investigating methods and tools used to conduct analysis and predict structural performance of bonded repairs and those used to monitor and evaluate repair quality over the life of the part. The initial baseline phase of the program verified analysis models and provided an initial reference point for inspection and monitoring systems used to detect and track damage formation. Recent second-phase efforts support bonded repair size limit (BRSL) studies and methods used to predict the limit load residual strength for a failed scarfed repair in solid composite laminates. In general, methods under development for BRSL residual strength predictions correlated well with test results.
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- 2019
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36. Adherence to Guideline-Directed Stroke Prevention Therapy for Atrial Fibrillation Is Achievable
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Jonathan P, Piccini, Haolin, Xu, Margueritte, Cox, Roland A, Matsouaka, Gregg C, Fonarow, Javed, Butler, Anne B, Curtis, Nihar, Desai, Margaret, Fang, Pamela J, McCabe, Robert L, Page Ii, Mintu, Turakhia, Andrea M, Russo, Bradley P, Knight, Mandeep, Sidhu, Jodie L, Hurwitz, Kenneth A, Ellenbogen, and William R, Lewis
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Aged, 80 and over ,Male ,Administration, Oral ,Anticoagulants ,Quality Improvement ,Severity of Illness Index ,Patient Discharge ,Stroke ,Treatment Outcome ,Atrial Fibrillation ,Odds Ratio ,Humans ,Female ,Guideline Adherence ,Registries ,Aged - Abstract
Efforts to improve prescription of oral anticoagulation (OAC) drugs in patients with atrial fibrillation have had limited success in improving guideline adherence.We evaluated adherence to the American College of Cardiology/American Heart Association performance measures for OAC in eligible patients with a CHAThe median (25th, 75th percentile) age was 73 years (65, 81 years); 51% were female; and the median (25th, 75th percentile) CHAAmong hospitals participating in the GWTG-AFIB quality improvement program, OAC prescription at discharge in eligible guideline-indicated patients increased significantly and improved consistently over time. These data confirm that high-level adherence to guideline-recommended stroke prevention is achievable.
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- 2019
37. Industry Payments to Cardiologists
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Amarnath, Annapureddy, Karthik, Murugiah, Karl E, Minges, Philip W, Chui, Nihar, Desai, and Jeptha P, Curtis
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Cardiologists ,Cross-Sectional Studies ,Time Factors ,Conflict of Interest ,Compensation and Redress ,Health Care Sector ,Humans ,Truth Disclosure - Published
- 2018
38. Additional file 2: Table S1. of Association of the FDA Amendment Act with trial registration, publication, and outcome reporting
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Phillips, Adam, Nihar Desai, Krumholz, Harlan, Zou, Constance, Miller, Jennifer, and Ross, Joseph
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health care economics and organizations - Abstract
Presenting the clinical trials supporting FDA approvals of drugs in cardiovascular disease and diabetes that were published in the biomedical literature in a manner that was discordant with the FDA reviewerâ s interpretation. (DOCX 32 kb)
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- 2017
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39. Additional file 1: of Association of the FDA Amendment Act with trial registration, publication, and outcome reporting
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Phillips, Adam, Nihar Desai, Krumholz, Harlan, Zou, Constance, Miller, Jennifer, and Ross, Joseph
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PRISMA checklist. (DOC 63 kb)
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- 2017
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40. Abstract 5: Trends in Hospitalization Rates and Mortality for Acute Myocardial Infarction by Community Income Level: 1999-2013
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Erica S Spatz, Adam L Beckman, Yun Wang, Nihar Desai, and Harlan M Krumholz
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Cardiology and Cardiovascular Medicine - Abstract
Background: Over the last decade, acute myocardial infarction (AMI) incidence and mortality have decreased substantially. Yet it is unknown whether these improvements were consistent across communities of different economic status and geographic regions, for which efforts to improve cardiovascular disease prevention and management may have had variable impact. Objective: To compare trends in risk-standardized AMI hospitalization and 1-year mortality rates from 1999 to 2013 between counties of low, average, and high median income, and to test the effects of income over time and across the 4 U.S. geographic regions. Methods: We performed an observational analysis comparing trends in county-level risk-standardized (age, sex, race) AMI hospitalization and 1-year mortality rates from 1999 to 2013 among Medicare beneficiaries ≥65 years, testing for effects of county-income. Counties were stratified by median income percentile using 1999 U.S. Census Bureau data, adjusted for inflation, as: low (75th) income groups. Using a mixed effects model, we compared trends in AMI hospitalization and mortality rates, stratified by county income. We tested for a lagged effect among low-income counties and compared trends between the 4 U.S. regions. Results: Income was significantly associated with AMI hospitalization, but not 1-year mortality rates. In the 15-year period, AMI risk-standardized hospitalization and mortality rates declined across all three county income groups, though absolute hospitalization rates differed significantly by county income groups (Figure). Low-income county hospitalization rates consistently lagged behind high-income county rates by 4.3 (95%CI: 3.1-5.9) years. There was no difference in rate of decline by geographic region. Conclusion: In this national study of AMI trends from 1999 to 2013, Medicare beneficiaries residing in counties of all income levels achieved substantial declines in AMI hospitalization and mortality. These broad-scale declines may reflect the success of focused AMI prevention efforts or other more secular trends. Nonetheless, disparities persist with low-income counties lagging behind high-income counties - a focus for future national efforts.
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- 2016
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41. An Educational Intervention to Improve Cost-Effective Care Among Medicine Housestaff
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Mary Thorndike, Nihar Desai, Benjamin D. Sommers, David W. Bates, Julie M. Fiskio, Adam Licurse, and Joel T. Katz
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Adult ,Male ,medicine.medical_specialty ,Cost-Benefit Analysis ,Education ,law.invention ,Randomized controlled trial ,law ,Intervention (counseling) ,Outcome Assessment, Health Care ,Internal Medicine ,Humans ,Medicine ,Hospital Mortality ,Hospital Costs ,Least-Squares Analysis ,health care economics and organizations ,Aged ,business.industry ,Teaching ,Internship and Residency ,General Medicine ,Middle Aged ,Hospitalization ,Logistic Models ,Massachusetts ,Family medicine ,Multivariate Analysis ,Female ,Educational Measurement ,business ,Medical costs - Abstract
High medical costs create significant burdens. Research indicates that doctors have little awareness of costs. This study tested whether a brief educational intervention could increase residents' awareness of cost-effectiveness and reduce costs without negatively affecting patient outcomes.The authors conducted a clustered randomized controlled trial of 33 teams (96 residents) at an internal medicine residency program (2009-2010). The intervention was a 45-minute teaching session; residents reviewed the hospital bill of a patient for whom they had cared and discussed reducing unnecessary costs. Primary outcomes were laboratory, pharmacy, radiology, and total hospital costs per admission. Secondary measures were length of stay (LOS), intensive care unit (ICU) admission, 30-day readmission, and 30-day mortality. Multivariate adjustment controlled for patient demographics and health. A follow-up survey assessed resident attitudes three months later.Among 1,194 patients, there were no significant cost differences between intervention and control groups. In the intervention group, 30-day readmission was higher (adjusted odds ratio 1.51, P = .010). There was no effect on LOS or the composite outcome of readmission, mortality, and ICU transfer. In a subgroup analysis of 835 patients newly admitted during the study, the intervention group incurred $163 lower adjusted lab costs per admission (P = .046). The follow-up survey indicated persistent differences in residents' exposure to concepts of cost-effectiveness (P = .041).A brief intervention featuring a discussion of hospital bills can fill a gap in resident education and reduce laboratory costs for a subset of patients, but may increase readmission risk.
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- 2012
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42. REDUCING CARDIOVASCULAR RISK IN THE MEDICARE MILLION HEARTS RISK REDUCTION MODEL
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Thomas M. Maddox, Jason H. Wasfy, Salim Virani, Steven A. Farmer, Nihar Desai, Jingyan Wang, William B. Borden, Johanna Contreras, Philip Jones, and Stacie L. Daugherty
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Potential impact ,medicine.medical_specialty ,Financial incentives ,business.industry ,Atherosclerotic cardiovascular disease ,Disease risk ,Medicine ,Cardiology and Cardiovascular Medicine ,business ,Intensive care medicine - Abstract
The Million Hearts Cardiovascular Disease Risk Reduction Model provides financial incentives for practices to lower 10-year atherosclerotic cardiovascular disease (ASCVD) risk for high risk (ASCVD >=30%) Medicare patients. We describe the potential impact of reducing modifiable risk factors on ASCVD
- Published
- 2018
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43. Abstract 16196: Impact of Baseline PCSK9 Levels on the Efficacy of Evolocumab, a Monoclonal Antibody Against PCSK9
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Nihar Desai, Robert Giugliano, Scott Wasserman, John Gibbs, Thomas Liu, Robert Scott, and Marc Sabatine
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Physiology (medical) ,Cardiology and Cardiovascular Medicine - Abstract
Introduction: Evolocumab (AMG 145), a fully human monoclonal antibody against proprotein convertase subtilisin kexin type 9 (PCSK9), significantly reduces low-density lipoprotein-cholesterol (LDL-C) by ~65%. Whether baseline PCSK9 levels impact the efficacy of evolocumab remains undefined. Methods: The mean placebo-controlled percent change from baseline in LDL-C measured by ultracentrifugation at week 10 & 12 was calculated for evolocumab 140 mg Q2W and 420 mg QM in 2293 patients from the pooled phase 3 trials. Median PCSK9 levels were measured in 138 patients from a substudy of the pooled phase 2 trials. For both analyses, patients were stratified into quartiles based upon baseline PCSK9 levels. Interaction tests were performed to evaluate for heterogeneity across quartiles. Results: At baseline in the pooled phase 3 trials, the median PCSK9 level was 323 ng/mL (25 th %ile 258 ng/mL; 75 th %ile 406 ng/mL). Demographics were similar across quartiles of baseline PCSK9, but, as expected, patients with higher levels of baseline PCSK9 were more likely to be receiving more intensive background statin therapy and had lower levels of LDL-C at baseline. Evolocumab 140 mg Q2W reduced PCSK9 levels by >90% 1 week after dosing and levels remained low (~100 ng/mL), regardless of baseline PCSK9 level (Figure top left). Evolocumab 420 mg QM rendered PCSK9 levels undetectable 1 week after dosing and reduced by >90% 2 weeks after dosing, regardless of baseline PCSK9 levels (Figure top right); 3 weeks after dosing PCSK9 levels remained low (~100 ng/mL) and by 4 weeks levels remained proportionately reduced by nearly half. Evolocumab significantly (P Conclusion: Evolocumab, a PCSK9 inhibitor, when administered 140 mg biweekly or 420 mg monthly, consistently and substantially reduces PCSK9 and LDL-C regardless of a patient’s baseline level of PCSK9.
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- 2014
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44. Abstract 106: Association between Insurance Status and Presentation Delay in Young Patients with Acute Myocardial Infarction: Insights from the VIRGO Study
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Serene I Chen, Yongfei Wang, Rachel Dreyer, Kelly M Strait, Erica S Spatz, Xiao Xu, Kim G Smolderen, Nihar Desai, Nancy P Lorenze, Judith H Lichtman, John A Spertus, Gail D'Onofrio, and Harlan M Krumholz
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Cardiology and Cardiovascular Medicine - Abstract
Background: Lacking health insurance and having financial concerns are known barriers to emergency care access in patients with AMI. However we do not know whether being uninsured or underinsured is associated with increased prehospital delay among young adults specifically, and whether this relationship varies by gender. Methods: We used data from the VIRGO study, a multicenter prospective study of women and men aged 18-55y with AMI (3,572). We excluded non-US patients (587) and those with unknown prehospital delay time (32) or insurance status (2). Participants were divided into 3 groups by health insurance status: 1. uninsured; 2. underinsured (insured but avoided care or medications due to cost concerns); 3. adequately insured (insured and without the above concerns). Prehospital delay was defined as the time interval between symptom onset and hospital presentation. The association between insurance groups and prehospital delay of >12 hours was examined using chi-square test. A hierarchical logistic model was used to evaluate the independent effect of insurance groups on prehospital delay of >12 hours adjusting for site clustering, demographics, medical history and clinical characteristics. Results: Of the 2951 young individuals with AMI in our study, 1987 were women (67.3%); the median age was 48 (IQR= 44, 52); 38% were underinsured; and 23%, uninsured. While women were less likely than men to be uninsured (21.8 vs 25.4%, P=0.03), they were more likely to be underinsured (60.5 vs 53.6%, P12 hours of prehospital delay: 38% of women and 29% of men (P=0.0001; figure). Insurance status was not associated with delays of >12 hrs in women (P=0.10) or men (P=0.57). After adjustments, the underinsured (OR 0.99; 95%CI 0.81, 1.19) and uninsured (OR 1.11; 95% CI 0.88, 1.39) did not have higher odds of having >12 hrs of prehospital delay compared to the adequately insured. Conclusion: More than 1 in 3 young individuals with AMI presented to hospitals beyond 12 hours after onset of symptoms. Insurance status was not associated with prehospital delays in this population. Although women are more likely to have >12 hours of prehospital delay, this difference is not attributable to differences in insurance status. Factors beyond the provision of insurance will need to be addressed to reduce delays.
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- 2014
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45. Simulation of Composite Manufacturing Variations to Determine Stiffness and Strength Reductions in Automotive and Aerospace Structure
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Park, Chul Y, Nihar Desai, Madhavadas Ramnath, Ohchang Jin, Lukaszewicz, Dirk, and Kerscher, Stephan
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- 2014
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46. A Design and Analysis Method for Automotive and Aerospace Composite Structures including Manufacturing Variations
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Lukaszewicz, Dirk, Hesse, Simon, Graff, Lavinia, Kerscher, Stefan, Deobald, Lyle, Park, Chul Y, and Nihar Desai
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- 2014
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47. ASSOCIATIONS OF HOSPITAL STRATEGIES AND 30-DAY RISK-STANDARDIZED MORTALITY RATES IN PERCUTANEOUS CORONARY INTERVENTION
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Jeptha Curtis, Karl E. Minges, Jeph Herrin, Nihar Desai, Brahmajee Nallamothu, John Rumsfeld, Mary Anne Elma, Peggy Chen, Henry Ting, and John Messenger
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Cardiology and Cardiovascular Medicine - Published
- 2016
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48. SOCIOECONOMIC DISPARITIES AND QUALITY OF IN-HOSPITAL CARE AFTER MYOCARDIAL INFARCTION IN THE NATIONAL CARDIOVASCULAR DATA REGISTRY
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James de Lemos, Nihar Desai, Laine Thomas, Matthew Roe, Jacob A. Udell, Wenying Zhang, Deepak Bhatt, and Shuang Li
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medicine.medical_specialty ,business.industry ,media_common.quotation_subject ,social sciences ,medicine.disease ,Hospital care ,Emergency medicine ,medicine ,population characteristics ,Quality (business) ,Myocardial infarction ,Medical emergency ,Cardiology and Cardiovascular Medicine ,business ,Socioeconomic status ,media_common - Published
- 2015
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49. Investigation of Bending/Buckling Characteristics for FRP Composite Poles
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Nihar Desai and Robert Yuan
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Engineering ,Buckling ,business.industry ,Structural system ,Rigidity (psychology) ,Structural engineering ,Bending ,Fibre-reinforced plastic ,business ,Finite element method ,Size effect on structural strength ,Transmission tower - Abstract
In recent years, the application of high-performance FRP composites in construction industry has grown tremendously in several different directions. The composite materials have been used extensively in manufacturing stand-alone structural members such as beams, columns, and wall panels in cooling tower system, in strengthening and retrofitting the existing but deteriorating structures to prevent the corrosion of steel members and the spalling of concrete surface. Other application area under consideration include infrastructure and facility members for transmission towers, closed circuit television poles, sign posts, guardrails, bridge railings, and light-gage structural system. The primary purpose of this paper is to investigate an application of FRP composites in product development for utility and/or lighting fixture poles, highway sign post, and medium size of transmission tower elements. This kind of infrastructural system can be designed, constructed, and operated in many challenging environments on planet earth, in-space, and on other planetary bodies such as the moon and mars. The objectives of this investigation are: (a) to determine the bending and buckling strengths of various FRP poles using eigenvalue solution, (b) to evaluate and compare the ultimate strength and stress of the facility poles using three dimensions finite element computational analysis, and (c) to perform the parametric structural efficiency analysis for determining an optimum rigidity length ratio, a/l, between the variable length from the fixed end to the overall length of the pole. The results indicate that the rigidity length ratio, a/l, as well as the moment of inertia ratio, I T / I B , have significant influence on the performance of facility poles, The study also proves that the step pole used in analytical model is light weight than the convention tapered pole for particular configurations.
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- 2006
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50. Carotid angioplasty for the management of extracranial carotid occlusive disease
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Melih, Arici, Judith E, Dahn, Nihar, Desai, and Michael S, Dahn
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Male ,Postoperative Complications ,Treatment Outcome ,Risk Factors ,Humans ,Carotid Stenosis ,Female ,Stents ,Angioplasty, Balloon - Abstract
Carotid endarterectomy (CEA) has become established as the preferred approach to the management of critical carotid stenosis. Carotid angioplasty with stenting (CAS) has recently arisen as an alternative in the treatment of carotid occlusive disease. This report describes our experience with carotid angioplasty applied to an unselected patient population suffering from high-grade carotid occlusive disease.All patients suffering from carotid stenosis (50% symptomatic or80% asymptomatic) were offered CAS or CEA. The first 39 patients who underwent attempted CAS over this last year are reported here. CAS was performed with the SMART PRECISE or ACCULINK stents. All procedures were performed with cerebral protection.The planned procedure success rate was 97% and the major adverse event (MAE) rate was 2.6% in 38 patients who underwent successful CAS. This included a minor stroke and a subendocardial myocardial infarction in the same individual. Both events were attributed to sustained postprocedural hypotension probably induced by increased carotid sinus activity.CAS can be accomplished with a MAE rate comparable to CEA and will likely become the dominant alternative to CEA for the management of carotid stenosis. In the setting of equivalent morbidity, it appears likely that a nonsurgical option will be preferred by patients.
- Published
- 2005
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