27 results on '"Gerber N."'
Search Results
2. Red deer browsing decelerates shrub regrowth despite increasing wolf presence
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Riesch, F., Raab, C., Tonn, B., Gerber, N., Zetsche, M., Signer, J., Meißner, M., Herzog, S., Balkenhol, N., Isselstein, J., Riesch, F., Raab, C., Tonn, B., Gerber, N., Zetsche, M., Signer, J., Meißner, M., Herzog, S., Balkenhol, N., and Isselstein, J.
- Abstract
Semi-natural open habitats in Europe have been shaped by traditional land use practices such as extensive mowing or livestock grazing. However, socio-economic transformations have led to the abandonment of many grassland and heathland areas and conservation management is now required to maintain these biodiverse habitats. Grazing by wild red deer (Cervus elaphus) can be a convenient alternative to laborious mechanical management or livestock grazing. Yet it remains unclear if free-ranging ungulates can counteract shrub growth sufficiently to maintain open habitats—especially with natural predators, i.e. wolves (Canis lupus), recolonizing Europe. To assess red deer effects on shrub regrowth after clearance we installed a cohort of open and fenced plots (17 pairs) in 2016, when wolf presence in our study area (Grafenwöhr military training area, DE) was negligible. When wolf presence had become frequent in 2020, we set up a second cohort (41 paired plots). For both cohorts, the vegetation in the shrub and herb layer was significantly higher in fenced than open plots already after one year. Shrub height increased continuously and dead herbaceous biomass accumulated under red deer exclusion. Consequently, wild red deer can slow down shrub succession in open habitats even under increasing predation pressure. Regardless of wolf presence, a wildlife management that enables red deer to forage in open landscapes could thus reduce the required frequency of conservation management interventions.
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- 2023
3. Improving residents’ wellbeing in senior citizen homes with more individualized food services
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Gerber, N, primary and Merkle, T, additional
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- 2023
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4. Editorial: let's get physical—long‐term benefits of vigorous physical activity in patients with nonalcoholic fatty liver disease. Authors' reply
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Henry, Austin, primary, Paik, James M., additional, Austin, Patrick, additional, Eberly, Katherine Elizabeth, additional, Golabi, Pegah, additional, Younossi, Issah, additional, Henry, Linda, additional, Gerber, N. Lynn, additional, and Younossi, Zobair M., additional
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- 2023
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5. Modic change classification from sagittal MRI with 3D convolutional neural networks and comparative analysis of normalization techniques
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Cina, A., primary, Haschtmann, D., additional, Damopoulos, D., additional, Gerber, N., additional, Loibl, M., additional, Fekete, T., additional, Mannion, A.F., additional, and Galbusera, F., additional
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- 2023
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6. Red Deer Browsing Decelerates Shrub Regrowth Despite Increasing Wolf Presence
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Riesch, F., primary, Raab, C., additional, Tonn, B., additional, Gerber, N., additional, Zetsche, M., additional, Signer, J., additional, Meißner, M., additional, Herzog, S., additional, Balkenhol, N., additional, and Isselstein, J., additional
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- 2023
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7. Radiotherapy Quality Assurance in SIOP Ependymoma II – Experiences from Germany, Austria and Switzerland
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Merta, J., primary, Jakob, K., additional, Lin, Y.L., additional, Kramer, P.H., additional, Plaude, S., additional, Behrends, C., additional, Stickan-Verfürth, M., additional, Geismar, D., additional, Mynarek, M., additional, Dietzsch, S., additional, Kortmann, R.D., additional, Benesch, M., additional, Gerber, N., additional, Rutkowski, S., additional, and Timmermann, B., additional
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- 2022
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8. Deep Learning Fully Automated 3D Models of Hip Labrum Based on MR Arthrography Are Feasible and Allow Detection of Differences in Labrum Volume among Different Hip Deformities: A Pilot Study
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Meier, M.K., additional, Zeng, G., additional, Lerch, T.D., additional, Gerber, N., additional, Tannast, M., additional, Siebenrock, K., additional, Steppacher, S., additional, and Schmaranzer, F., additional
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- 2022
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9. The Clinical Utility of a 7-Gene Biosignature on Radiation Therapy Decision Making in Patients with Ductal Carcinoma In Situ Following Breast-Conserving Surgery: An Updated Analysis of the DCISionRT ® PREDICT Study.
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Shah C, Whitworth P, Vicini FA, Narod S, Gerber N, Jhawar SR, King TA, Mittendorf EA, Willey SC, Rabinovich R, Gold L, Brown E, Patel A, Vargo J, Barry PN, Rock D, Friedman N, Bedi G, Templeton S, Brown S, Gabordi R, Riley L, Lee L, Baron P, Majithia L, Mirabeau-Beale KL, Reid VJ, Hirsch A, Hwang C, Pellicane J, Maganini R, Khan S, MacDermed DM, Small W, Mittal K, Borgen P, Cox C, Shivers SC, and Bremer T
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- Adult, Aged, Female, Humans, Middle Aged, Biomarkers, Tumor, Clinical Decision-Making, Decision Making, Follow-Up Studies, Neoplasm Recurrence, Local pathology, Prognosis, Prospective Studies, Radiotherapy, Adjuvant, Breast Neoplasms radiotherapy, Breast Neoplasms surgery, Breast Neoplasms pathology, Carcinoma, Intraductal, Noninfiltrating radiotherapy, Carcinoma, Intraductal, Noninfiltrating surgery, Carcinoma, Intraductal, Noninfiltrating pathology, Mastectomy, Segmental
- Abstract
Background: Breast-conserving surgery (BCS) followed by adjuvant radiotherapy (RT) is a standard treatment for ductal carcinoma in situ (DCIS). A low-risk patient subset that does not benefit from RT has not yet been clearly identified. The DCISionRT test provides a clinically validated decision score (DS), which is prognostic of 10-year in-breast recurrence rates (invasive and non-invasive) and is also predictive of RT benefit. This analysis presents final outcomes from the PREDICT prospective registry trial aiming to determine how often the DCISionRT test changes radiation treatment recommendations., Methods: Overall, 2496 patients were enrolled from February 2018 to January 2022 at 63 academic and community practice sites and received DCISionRT as part of their care plan. Treating physicians reported their treatment recommendations pre- and post-test as well as the patient's preference. The primary endpoint was to identify the percentage of patients where testing led to a change in RT recommendation. The impact of the test on RT treatment recommendation was physician specialty, treatment settings, individual clinical/pathological features and RTOG 9804 like criteria. Multivariate logisitc regression analysis was used to estimate the odds ratio (ORs) for factors associated with the post-test RT recommendations., Results: RT recommendation changed 38% of women, resulting in a 20% decrease in the overall recommendation of RT (p < 0.001). Of those women initially recommended no RT (n = 583), 31% were recommended RT post-test. The recommendation for RT post-test increased with increasing DS, from 29% to 66% to 91% for DS <2, DS 2-4, and DS >4, respectively. On multivariable analysis, DS had the strongest influence on final RT recommendation (odds ratio 22.2, 95% confidence interval 16.3-30.7), which was eightfold greater than clinicopathologic features. Furthermore, there was an overall change in the recommendation to receive RT in 42% of those patients meeting RTOG 9804-like low-risk criteria., Conclusions: The test results provided information that changes treatment recommendations both for and against RT use in large population of women with DCIS treated in a variety of clinical settings. Overall, clinicians changed their recommendations to include or omit RT for 38% of women based on the test results. Based on published clinical validations and the results from current study, DCISionRT may aid in preventing the over- and undertreatment of clinicopathological 'low-risk' and 'high-risk' DCIS patients., Trial Registration: ClinicalTrials.gov identifier: NCT03448926 ( https://clinicaltrials.gov/study/NCT03448926 )., (© 2024. The Author(s).)
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- 2024
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10. Coronary artery dilation in non-hospitalised children with asymptomatic or mild COVID-19.
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Gerber N, Lutrario C, Rosenthal M, Platt S, Holzer R, and Flynn P
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- Child, Humans, Coronary Vessels diagnostic imaging, Dilatation, SARS-CoV-2, COVID-19 complications, Coronary Aneurysm, Systemic Inflammatory Response Syndrome
- Abstract
Introduction: Infection with Sars-CoV-2 is known to cause cardiac injury and coronary artery changes in moderate to severe acute COVID-19 and post-acute multisystem inflammatory syndrome in children (MIS-C). However, little is known about the potential for cardiac involvement, in particular coronary artery dilation, in asymptomatic or mild cases of COVID-19., Methods: A retrospective review of children ≤ 18 years of age with a history of asymptomatic or mild COVID-19 disease who underwent echocardiography after Sars-CoV-2 infection is conducted. Patients were excluded if they had been hospitalised for COVID-19/MIS-C or had a history of cardiac disease that could affect coronary artery dimension. Coronary artery dilation was defined as the Boston Z-score greater than 2.0., Results: One hundred and fifty-seven patients met inclusion criteria with a mean age of 9.4 years (+/- 5.4 years). Eighty-four (54%) patients were identified as having COVID-19 through positive antibody testing. All patients underwent electrocardiogram and echocardiogram as part of their cardiology evaluation. One hundred and thirty-five (86%) patients had a normal evaluation or only a minor variant on electrocardiogram, while 22 patients had abnormalities on echocardiogram, 4 of which demonstrated coronary artery dilation based on the Boston Z-score., Conclusions: Much of the literature for post-infectious screening and follow-up focuses on patients with a history of moderate to severe COVID-19 disease, emphasising the need for surveillance for the potential development of myocarditis. In this study, 4 out of 157 (2.5%) children with a history of asymptomatic or mild COVID-19 disease without MIS-C were found to have some degree of coronary artery dilation. The significance of this finding currently remains unknown.
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- 2024
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11. Effectiveness and toxicity of five-fraction prone accelerated partial breast irradiation.
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Hardy-Abeloos C, Xiao J, Oh C, Barbee D, Shah B, Maisonet O, Perez C, Adams S, Schnabel F, Axelrod D, Guth A, Karp N, Cahlon O, and Gerber N
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- Female, Humans, Mastectomy, Segmental, Breast surgery, Fibrosis, Treatment Outcome, Breast Neoplasms radiotherapy, Breast Neoplasms surgery, Breast Neoplasms etiology, Brachytherapy adverse effects
- Abstract
Purpose: Our institution was an early adopter of 5-fraction accelerated partial breast irradiation (ABPI) to treat women with early-stage breast cancer. This study reports long-term oncologic and cosmetic outcomes., Methods: We included patients receiving APBI 600 cGy × 5 fx delivered every other day or every day between 2010 and 2022. Logistic regression models were used to identify factors associated with development of late toxicities, clinician, and patient-rated cosmesis. Kaplan-Meier methodology was used to calculate overall survival (OS), disease-free survival (DFS), and locoregional recurrence-free survival (LR-RFS)., Results: 442 patients received APBI either daily (56%) or every other day (44%) in the prone position (92%). At a median follow-up of 48 months (range: 5.96-155 months), 12 (2.7%) patients developed a local recurrence (LR). Out of 258 patients with > 3-month toxicity data available, the most common late grade ≥ 2 adverse event was breast fibrosis (6.2%). On multivariate analysis, daily APBI treatment (vs every other day) did not correlate with an increased risk of any late grade ≥ 2 toxicity though it did correlate with a lower risk of any late grade ≥ 2 fibrosis. Overall, at a median follow-up of 80 months, the rates of good-excellent physician and patient-rated cosmesis were 95% and 85%, respectively, with no difference between patients treated on consecutive vs. every other day. On multivariate analysis, patients who did not receive any adjuvant therapy were at increased risk of developing a LR. Five-year OS, LRFS, and DFS were 97.2%, 97.7%, and 89.5%, respectively., Conclusions: Five-fraction APBI delivered primarily in the prone position either daily or every other day was effective with low rates of local recurrence, minimal toxicity, and excellent cosmesis at long-term follow-up., (© 2023. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
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- 2024
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12. Bevacizumab, Irinotecan, or Topotecan Added to Temozolomide for Children With Relapsed and Refractory Neuroblastoma: Results of the ITCC-SIOPEN BEACON-Neuroblastoma Trial.
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Moreno L, Weston R, Owens C, Valteau-Couanet D, Gambart M, Castel V, Zwaan CM, Nysom K, Gerber N, Castellano A, Laureys G, Ladenstein R, Rössler J, Makin G, Murphy D, Morland B, Vaidya S, Thebaud E, van Eijkelenburg N, Tweddle DA, Barone G, Tandonnet J, Corradini N, Chastagner P, Paillard C, Bautista FJ, Gallego Melcon S, De Wilde B, Marshall L, Gray J, Burchill SA, Schleiermacher G, Chesler L, Peet A, Leach MO, McHugh K, Hayes R, Jerome N, Caron H, Laidler J, Fenwick N, Holt G, Moroz V, Kearns P, Gates S, Pearson ADJ, and Wheatley K
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- Child, Humans, Infant, Child, Preschool, Adolescent, Young Adult, Adult, Temozolomide therapeutic use, Irinotecan therapeutic use, Bevacizumab adverse effects, Dacarbazine adverse effects, Neoplasm Recurrence, Local drug therapy, Neoplasm Recurrence, Local pathology, Antineoplastic Combined Chemotherapy Protocols adverse effects, Topotecan adverse effects, Neuroblastoma pathology
- Abstract
Purpose: Outcomes for children with relapsed and refractory high-risk neuroblastoma (RR-HRNB) remain dismal. The BEACON Neuroblastoma trial (EudraCT 2012-000072-42) evaluated three backbone chemotherapy regimens and the addition of the antiangiogenic agent bevacizumab (B)., Materials and Methods: Patients age 1-21 years with RR-HRNB with adequate organ function and performance status were randomly assigned in a 3 × 2 factorial design to temozolomide (T), irinotecan-temozolomide (IT), or topotecan-temozolomide (TTo) with or without B. The primary end point was best overall response (complete or partial) rate (ORR) during the first six courses, by RECIST or International Neuroblastoma Response Criteria for patients with measurable or evaluable disease, respectively. Safety, progression-free survival (PFS), and overall survival (OS) time were secondary end points., Results: One hundred sixty patients with RR-HRNB were included. For B random assignment (n = 160), the ORR was 26% (95% CI, 17 to 37) with B and 18% (95% CI, 10 to 28) without B (risk ratio [RR], 1.52 [95% CI, 0.83 to 2.77]; P = .17). Adjusted hazard ratio for PFS and OS were 0.89 (95% CI, 0.63 to 1.27) and 1.01 (95% CI, 0.70 to 1.45), respectively. For irinotecan ([I]; n = 121) and topotecan (n = 60) random assignments, RRs for ORR were 0.94 and 1.22, respectively. A potential interaction between I and B was identified. For patients in the bevacizumab-irinotecan-temozolomide (BIT) arm, the ORR was 23% (95% CI, 10 to 42), and the 1-year PFS estimate was 0.67 (95% CI, 0.47 to 0.80)., Conclusion: The addition of B met protocol-defined success criteria for ORR and appeared to improve PFS. Within this phase II trial, BIT showed signals of antitumor activity with acceptable tolerability. Future trials will confirm these results in the chemoimmunotherapy era.
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- 2024
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13. Food safety and dietary diversity in African urban cities: evidence from Ghana.
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Dzudzor MI, Gerber N, and Asante FA
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- Humans, Cities, Ghana epidemiology, Vomiting, Food Supply, Diet, Diarrhea
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Background: Food safety is integral to food security and is increasingly becoming a significant concern in the urban areas of Africa, which are rapidly growing in population. In the case of Ghana, many urban households depend on traditional open-air markets for most of their food needs. However, these urban food markets also depend on domestic food supply chains, which are prone to risks, including poor hygiene and sanitation and weather seasonality. Food safety compliance has associated costs which increase the unit cost of food products. Thus, higher food price is a risk factor to food availability and accessibility-fundamental pillars of food security., Method: We use food microbial data and food retail data from food market surveys in major cities in Ghana to assess the safety of selected fresh food commodities and how retailers handle the food products they sell. Additionally, based on a two-wave balanced panel household data, we used fixed effects Poisson and Correlated Random Effects (CRE) Probit models to estimate the effect of weather seasonality on the incidence of diarrhoea and urban household dietary diversity score (HDDS). A final sample of 609 households and 565 market respondents participated in the study., Results: Our findings show that selected food samples tested positive for Staphylococcus aureus and E.coli and had aflatoxin B1 levels above 5.0 ppb. Additionally, the household incidence of diarrhoea/vomiting, a proxy for food safety status, is higher in the dry season. In the dry season, the household incidence of diarrhoea/vomiting increases on average by a probability of 38% points compared to the rainy season. Regarding HDDS, the average HDDS is 7.3; however, we did not find the effect of seasonality on HDDS to be significant., Conclusions: Although urban food availability and household dietary diversity are not challenges for many urban households, food safety is a challenge in the major food markets in Ghanaian cities and is associated with weather seasonality. Foods available in traditional open-air markets are not always safe for consumption, undermining households' food security. Weak enforcement of food safety regulations contributes to the food safety challenges in Ghanaian urban food markets., (© 2024. The Author(s).)
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- 2024
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14. Comparing image normalization techniques in an end-to-end model for automated modic changes classification from MRI images.
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Cina A, Haschtmann D, Damopoulos D, Gerber N, Loibl M, Fekete T, Kleinstück F, and Galbusera F
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Introduction: Modic Changes (MCs) are MRI alterations in spine vertebrae's signal intensity. This study introduces an end-to-end model to automatically detect and classify MCs in lumbar MRIs. The model's two-step process involves locating intervertebral regions and then categorizing MC types (MC0, MC1, MC2) using paired T1-and T2-weighted images. This approach offers a promising solution for efficient and standardized MC assessment., Research Question: The aim is to investigate how different MRI normalization techniques affect MCs classification and how the model can be used in a clinical setting., Material and Methods: A combination of Faster R-CNN and a 3D Convolutional Neural Network (CNN) is employed. The model first identifies intervertebral regions and then classifies MC types (MC0, MC1, MC2) using paired T1-and T2-weighted lumbar MRIs. Two datasets are used for model development and evaluation., Results: The detection model achieves high accuracy in identifying intervertebral areas, with Intersection over Union (IoU) values above 0.7, indicating strong localization alignment. Confidence scores above 0.9 demonstrate the model's accurate levels identification. In the classification task, standardization proves the best performances for MC type assessment, achieving mean sensitivities of 0.83 for MC0, 0.85 for MC1, and 0.78 for MC2, along with balanced accuracy of 0.80 and F1 score of 0.88., Discussion and Conclusion: The study's end-to-end model shows promise in automating MC assessment, contributing to standardized diagnostics and treatment planning. Limitations include dataset size, class imbalance, and lack of external validation. Future research should focus on external validation, refining model generalization, and improving clinical applicability., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2023 The Authors.)
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- 2023
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15. Culture-based prescribing to improve mental health: a scoping review protocol.
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Bekkering GE, Corremans M, Gemignani M, Gerber N, Godderis L, Kaewma S, Khammathit A, Steel J, and Hannes K
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- Humans, Databases, Factual, Scoping Reviews As Topic, Mental Health
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Objective: The objective of this review is to investigate what is known about culture-based prescribing to improve mental health and well-being., Introduction: Culture-based prescribing, where a person is referred by a clinical professional to an arts or cultural activity aimed at improving mental health and well-being, is increasingly used as a community-based source of support. Although culture-based prescribing seems promising, the field is heterogeneous with respect to definition, underlying hypotheses, and cultural activity. This hampers its further development and implementation., Inclusion Criteria: We will consider publications that report on or explore culture-based prescribing to improve mental health and well-being for adults with symptoms related to mental health conditions who are seeking care from any clinical professional., Methods: We will search 8 electronic literature databases for published or unpublished reports on culture-based prescribing, without date limits. We will also search for gray literature and screen reference lists of relevant reviews. No language restrictions will be applied during the screening process, but for data extraction, we will only extract studies in languages our team has proficiency in. The screening and data extraction will be performed by 2 reviewers, independently. Data analysis will be descriptive, with results tabulated separately for each subquestion. The results will be complemented with a narrative summary., Review Registration: Open Science Framework https://osf.io/ndbqj., Competing Interests: The authors declare no conflict of interest., (Copyright © 2023 JBI.)
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- 2023
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16. Does the dGEMRIC Index Recover 3 Years After Surgical FAI Correction and an Initial dGEMRIC Decrease at 1-Year Follow-up? A Controlled Prospective Study.
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Meier MK, Scheuber S, Hanke MS, Haefeli PC, Ruckli AC, Liechti EF, Gerber N, Lerch TD, Tannast M, Siebenrock KA, Steppacher SD, and Schmaranzer F
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- Humans, Prospective Studies, Hip Joint surgery, Gadolinium, Cohort Studies, Longitudinal Studies, Follow-Up Studies, Contrast Media, Magnetic Resonance Imaging methods, Femoracetabular Impingement diagnostic imaging, Femoracetabular Impingement surgery, Femoracetabular Impingement pathology, Cartilage, Articular diagnostic imaging, Cartilage, Articular surgery, Cartilage, Articular pathology
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Background: Delayed gadolinium-enhanced magnetic resonance imaging of cartilage (dGEMRIC) allows objective and noninvasive assessment of cartilage quality. An interim analysis 1 year after correction of femoroacetabular impingement (FAI) previously showed that the dGEMRIC index decreased despite good clinical outcome., Purpose: To evaluate dGEMRIC indices longitudinally in patients who underwent FAI correction and in a control group undergoing nonoperative treatment for FAI., Study Design: Cohort study; Level of evidence, 3., Methods: This prospective, comparative longitudinal study included 39 patients (40 hips) who received either operative (n = 20 hips) or nonoperative (n = 20 hips) treatment. Baseline demographic characteristics and presence of osseous deformities did not differ between groups. All patients received indirect magnetic resonance arthrography at 3 time points (baseline, 1 and 3 years of follow-up). The 3-dimensional cartilage models were created using a custom-developed deep learning-based software. The dGEMRIC indices were determined separately for acetabular and femoral cartilage. A mixed-effects model was used for statistical analysis in repeated measures., Results: The operative group showed an initial (preoperative to 1-year follow-up) decrease of dGEMRIC indices: acetabular from 512 ± 174 to 392 ± 123 ms and femoral from 530 ± 173 to 411 ± 117 ms (both P < .001). From 1-year to 3-year follow-up, dGEMRIC indices improved again: acetabular from 392 ± 123 to 456 ± 163 ms and femoral from 411 ± 117 to 477 ± 169 ms (both P < .001). The nonoperative group showed no significant changes in dGEMRIC indices in acetabular and femoral cartilage from baseline to either follow-up point (all P > .05)., Conclusion: This study showed that 3 years after FAI correction, the dGEMRIC indices improved compared with short-term 1-year follow-up. This may be due to normalized joint biomechanics or regressive postoperative activation of the inflammatory cascade after intra-articular surgery.
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- 2023
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17. Deep-Learning-Based Segmentation of the Shoulder from MRI with Inference Accuracy Prediction.
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Hess H, Ruckli AC, Bürki F, Gerber N, Menzemer J, Burger J, Schär M, Zumstein MA, and Gerber K
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Three-dimensional (3D)-image-based anatomical analysis of rotator cuff tear patients has been proposed as a way to improve repair prognosis analysis to reduce the incidence of postoperative retear. However, for application in clinics, an efficient and robust method for the segmentation of anatomy from MRI is required. We present the use of a deep learning network for automatic segmentation of the humerus, scapula, and rotator cuff muscles with integrated automatic result verification. Trained on N = 111 and tested on N = 60 diagnostic T1-weighted MRI of 76 rotator cuff tear patients acquired from 19 centers, a nnU-Net segmented the anatomy with an average Dice coefficient of 0.91 ± 0.06. For the automatic identification of inaccurate segmentations during the inference procedure, the nnU-Net framework was adapted to allow for the estimation of label-specific network uncertainty directly from its subnetworks. The average Dice coefficient of segmentation results from the subnetworks identified labels requiring segmentation correction with an average sensitivity of 1.0 and a specificity of 0.94. The presented automatic methods facilitate the use of 3D diagnosis in clinical routine by eliminating the need for time-consuming manual segmentation and slice-by-slice segmentation verification.
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- 2023
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18. Disparities in the Uptake of Telemedicine and Implications for Clinical Trial Enrollment in Patients With Breast Cancer.
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Hardy-Abeloos C, Karp J, Xiao J, Oh C, Barbee D, Maisonet O, and Gerber N
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- Female, Humans, Pandemics, Prospective Studies, Randomized Controlled Trials as Topic, Breast Neoplasms radiotherapy, COVID-19 epidemiology, Telemedicine
- Abstract
Purpose: Since the COVID-19 pandemic, telemedicine has emerged as an alternative to office visits in routine radiation oncology practice. The purpose of this study was to identify factors associated with patient preference for an initial consult via telemedicine and correlation with clinical trial enrollment., Methods and Materials: We evaluated patients with breast cancer seen during the open enrollment of a prospective randomized trial from June 1, 2020, to May 13, 2021. Univariate and multivariate logistic regression models were used to identify factors associated with virtual versus in-person initial consultation. All statistical tests were 2-sided, and the null hypothesis was rejected for P < .05., Results: We identified 476 patient consultations with 259 office visits and 217 telemedicine visits. On multivariate analysis, increased age, unemployment, chemotherapy receipt, and radiation at our institution were associated with decreased usage of telemedicine for consultation visit. Out of 217 patients who underwent a telemedicine initial consultation, 10% were eligible to enroll on the trial, and of those eligible 76% enrolled. Out of 259 patients who underwent office visit initial consultation, 14% were eligible to enroll on the trial, and of those eligible 53% enrolled. Among eligible patients, there was no statistically significant difference in clinical trial enrollment between telemedicine and office visits., Conclusions: Older patients, unemployed patients, those receiving chemotherapy, and those who subsequently received radiation at our institution were less likely to use telemedicine for their initial consult. Despite these disparities in telemedicine usage, there was no difference in clinical trial enrollment. Telemedicine may be an effective platform for clinical trial enrollment though further strategies to improve its access are essential., (Copyright © 2022 Elsevier Inc. All rights reserved.)
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- 2023
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19. Radiation Recall Dermatitis after Donor Lymphocyte Infusion for Adult T-Cell Leukemia Lymphoma Post-Allogeneic Stem Cell Transplant.
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Hardy-Abeloos C, Gerber N, and Shaikh F
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- Adult, Humans, Stem Cell Transplantation adverse effects, Lymphocytes, Leukemia-Lymphoma, Adult T-Cell complications, Hematopoietic Stem Cell Transplantation adverse effects, Graft vs Host Disease etiology, Graft vs Host Disease prevention & control, Radiodermatitis, COVID-19 complications
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To our knowledge, this is the first case report describing radiation recall dermatitis (RRD) after donor lymphocyte infusion post-allogeneic stem cell transplant in a patient with acute T-cell leukemia lymphoma. Given its rare occurrence, unclear clinical characterization, and etiology, RRD remains poorly understood. In the setting of novel immunotherapies and recent development of COVID-19 mRNA vaccines, we aimed to better characterize RRD and its most likely pathogenesis in our patient's case., (Copyright © 2022 American Society for Radiation Oncology. Published by Elsevier Inc. All rights reserved.)
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- 2023
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20. Trauma center variation of head computed tomography utilization in children presenting with mild traumatic brain injury.
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Gerber N, Munnangi S, Vengalasetti Y, and Gupta S
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- Adult, Child, Humans, Trauma Centers, Retrospective Studies, Tomography, X-Ray Computed, Unconsciousness, Brain Concussion diagnostic imaging, Brain Concussion epidemiology
- Abstract
Background: Although published clinical decision rules have identified indications for the use of head CT in children with mild traumatic brain injury, practices vary., Objective: This study seeks to evaluate whether the utilization of head CT in pediatric trauma patients presenting with mTBI varies between American College of Surgeons verified pediatric trauma centers (ACS-PTC) and adult-only trauma centers (ACS-AOTC)., Material and Methods: A retrospective cohort study of 24,104 trauma patients, ≤17, who presented to the emergency department at 337 ACS verified level I/II trauma centers with isolated mTBI was conducted using National Trauma Data Bank records (2011-2015). Multivariable logistic regression was used to compare the odds of a patient receiving a head CT when treated at an ACS-PTC vs. an ACS-AOTC, controlling for demographic, injury, and hospital-level confounders. Effect modification by loss of consciousness was assessed and adjusted head CT odds were recalculated in patients stratified by LOC status., Results: There was no significant difference in the adjusted odds of receiving a head CT at an ACS-PTC vs. an ACS-AOTC (odds ratio: 0.98, 95% confidence interval: 0.92-1.04). However, in patients who had a LOC, the adjusted OR of receiving a head CT at an ACS-PTC vs ACS-AOTC was 0.71 (95% confidence interval: 0.65-0.78)., Conclusion: Children presenting to the emergency department of an ACS-verified level I or II trauma center with mTBI who had a loss of consciousness are less likely to receive a head CT at an ACS verified pediatric trauma center than at an ACS verified adult-only trauma center., Competing Interests: Declaration of competing interest The authors declare that they have no conflicts of interest., (Copyright © 2022. Published by Elsevier Inc.)
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- 2023
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21. Early effectiveness and toxicity outcomes of reirradiation after breast conserving surgery for recurrent or new primary breast cancer.
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Hardy-Abeloos C, Xiao J, Oh C, Barbee D, Perez CA, Oratz R, Schnabel F, Axelrod D, Guth A, Braunstein LZ, Khan A, Choi JI, and Gerber N
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- Humans, Female, Mastectomy, Segmental methods, Mastectomy, Neoplasm Recurrence, Local radiotherapy, Neoplasm Recurrence, Local surgery, Neoplasm Recurrence, Local drug therapy, Carcinoma, Intraductal, Noninfiltrating pathology, Breast Neoplasms radiotherapy, Breast Neoplasms surgery, Breast Neoplasms etiology, Re-Irradiation adverse effects
- Abstract
Purpose: Breast reirradiation (reRT) after breast conserving surgery (BCS) has emerged as a viable alternative to mastectomy for women presenting with recurrent or new primary breast cancer. There are limited data on safety of different fractionation regimens. This study reports safety and efficacy among women treated with repeat BCS and reRT., Methods and Materials: Patients who underwent repeat BCS followed by RT from 2015 to 2021 at 2 institutions were analyzed. Univariate logistic regression models were used to identify predictors of acute and late toxicities. Kaplan-Meier estimates were used to evaluate overall survival (OS), distant metastasis-free survival (DMFS) and locoregional recurrence-free survival (LR-RFS)., Results: Sixty-six patients were reviewed with median follow-up of 16 months (range: 3-60 months). At time of first recurrence, 41% had invasive carcinoma with a ductal carcinoma in situ (DCIS) component, 41% had invasive carcinoma alone and 18% had DCIS alone. All were clinically node negative. For the reirradiation course, 95% received partial breast irradiation (PBI) (57.5% with 1.5 Gy BID; 27% with 1.8 Gy daily; 10.5% with hypofractionation), and 5% received whole breast irradiation (1.8-2 Gy/fx), all of whom had received PBI for initial course. One patient experienced grade 3 fibrosis, and one patient experienced grade 3 telangiectasia. None had grade 4 or higher late adverse events. We found no association between the fractionation of the second course of RT or the cumulative dose (measured as EQD2) with acute or late toxicity. At 2 years, OS was 100%, DMFS was 91.6%, and LR-RFS was 100%., Conclusion: In this series of patients with recurrent or new primary breast cancer, a second breast conservation surgery followed by reirradiation was effective with no local recurrences and an acceptable toxicity profile across a range of available fractionation regimens at a median follow up of 16 months. Longer follow up is required., (© 2023. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
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- 2023
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22. A Deep Learning Method for Quantification of Femoral Head Necrosis Based on Routine Hip MRI for Improved Surgical Decision Making.
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Ruckli AC, Nanavati AK, Meier MK, Lerch TD, Steppacher SD, Vuilleumier S, Boschung A, Vuillemin N, Tannast M, Siebenrock KA, Gerber N, and Schmaranzer F
- Abstract
(1) Background: To evaluate the performance of a deep learning model to automatically segment femoral head necrosis (FHN) based on a standard 2D MRI sequence compared to manual segmentations for 3D quantification of FHN. (2) Methods: Twenty-six patients (thirty hips) with avascular necrosis underwent preoperative MR arthrography including a coronal 2D PD-w sequence and a 3D T1 VIBE sequence. Manual ground truth segmentations of the necrotic and unaffected bone were then performed by an expert reader to train a self-configuring nnU-Net model. Testing of the network performance was performed using a 5-fold cross-validation and Dice coefficients were calculated. In addition, performance across the three segmentations were compared using six parameters: volume of necrosis, volume of unaffected bone, percent of necrotic bone volume, surface of necrotic bone, unaffected femoral head surface, and percent of necrotic femoral head surface area. (3) Results: Comparison between the manual 3D and manual 2D segmentations as well as 2D with the automatic model yielded significant, strong correlations (Rp > 0.9) across all six parameters of necrosis. Dice coefficients between manual- and automated 2D segmentations of necrotic- and unaffected bone were 75 ± 15% and 91 ± 5%, respectively. None of the six parameters of FHN differed between the manual and automated 2D segmentations and showed strong correlations (Rp > 0.9). Necrotic volume and surface area showed significant differences (all p < 0.05) between early and advanced ARCO grading as opposed to the modified Kerboul angle, which was comparable between both groups (p > 0.05). (4) Conclusions: Our deep learning model to automatically segment femoral necrosis based on a routine hip MRI was highly accurate. Coupled with improved quantification for volume and surface area, as opposed to 2D angles, staging and course of treatment can become better tailored to patients with varying degrees of AVN.
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- 2023
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23. The children's brain tumor network (CBTN) - Accelerating research in pediatric central nervous system tumors through collaboration and open science.
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Lilly JV, Rokita JL, Mason JL, Patton T, Stefankiewiz S, Higgins D, Trooskin G, Larouci CA, Arya K, Appert E, Heath AP, Zhu Y, Brown MA, Zhang B, Farrow BK, Robins S, Morgan AM, Nguyen TQ, Frenkel E, Lehmann K, Drake E, Sullivan C, Plisiewicz A, Coleman N, Patterson L, Koptyra M, Helili Z, Van Kuren N, Young N, Kim MC, Friedman C, Lubneuski A, Blackden C, Williams M, Baubet V, Tauhid L, Galanaugh J, Boucher K, Ijaz H, Cole KA, Choudhari N, Santi M, Moulder RW, Waller J, Rife W, Diskin SJ, Mateos M, Parsons DW, Pollack IF, Goldman S, Leary S, Caporalini C, Buccoliero AM, Scagnet M, Haussler D, Hanson D, Firestein R, Cain J, Phillips JJ, Gupta N, Mueller S, Grant G, Monje-Deisseroth M, Partap S, Greenfield JP, Hashizume R, Smith A, Zhu S, Johnston JM, Fangusaro JR, Miller M, Wood MD, Gardner S, Carter CL, Prolo LM, Pisapia J, Pehlivan K, Franson A, Niazi T, Rubin J, Abdelbaki M, Ziegler DS, Lindsay HB, Stucklin AG, Gerber N, Vaske OM, Quinsey C, Rood BR, Nazarian J, Raabe E, Jackson EM, Stapleton S, Lober RM, Kram DE, Koschmann C, Storm PB, Lulla RR, Prados M, Resnick AC, and Waanders AJ
- Subjects
- Adult, Humans, Child, Quality of Life, Brain Neoplasms therapy
- Abstract
Pediatric brain tumors are the leading cause of cancer-related death in children in the United States and contribute a disproportionate number of potential years of life lost compared to adult cancers. Moreover, survivors frequently suffer long-term side effects, including secondary cancers. The Children's Brain Tumor Network (CBTN) is a multi-institutional international clinical research consortium created to advance therapeutic development through the collection and rapid distribution of biospecimens and data via open-science research platforms for real-time access and use by the global research community. The CBTN's 32 member institutions utilize a shared regulatory governance architecture at the Children's Hospital of Philadelphia to accelerate and maximize the use of biospecimens and data. As of August 2022, CBTN has enrolled over 4700 subjects, over 1500 parents, and collected over 65,000 biospecimen aliquots for research. Additionally, over 80 preclinical models have been developed from collected tumors. Multi-omic data for over 1000 tumors and germline material are currently available with data generation for > 5000 samples underway. To our knowledge, CBTN provides the largest open-access pediatric brain tumor multi-omic dataset annotated with longitudinal clinical and outcome data, imaging, associated biospecimens, child-parent genomic pedigrees, and in vivo and in vitro preclinical models. Empowered by NIH-supported platforms such as the Kids First Data Resource and the Childhood Cancer Data Initiative, the CBTN continues to expand the resources needed for scientists to accelerate translational impact for improved outcomes and quality of life for children with brain and spinal cord tumors., Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. David S. Ziegler is a consultant, or on the advisory board, of Bayer, AstraZeneca, Accendatech, Novartis, Day One, FivePhusion, Amgen, Alexion, and Norgine. Angela J. Waanders is on the advisory board of Alexion and Day One., (Copyright © 2022. Published by Elsevier Inc.)
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- 2023
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24. Current topics of interdisciplinary cooperation between engineering and human sciences.
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Dressler A, Gerber N, Menig A, Pasnicu O, Stöver A, and Vogt J
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In this article, we highlight current research directions in the Technikpsychologie research area, using the example of the interdisciplinary research work of FAI (Work and Engineering Psychology Research Group at the Technical University of Darmstadt) and the articles included in this special issue. To this end, we relate the articles in this special issue from the research areas of road traffic planning (Hupfer et al.), usable IT security and privacy solutions (Renaud), social aspects of technically mediated communication (Diefenbach), human-centered interface design (Mucha et al.), aviation safety (Santel), human-centered design of autonomous vehicles (Lindner & Stoll), and perceptual psychology-oriented product design (Zandi & Khanh) to current research projects at FAI. Practical Relevance Technical products only offer added value by efficiently supporting users in achieving their goals if they have been developed appropriately for the context of use and the individual characteristics of the users. The human-centered design of-especially technical-products reflects this through an iterative and participatory development process. In this article, we describe nine examples of such human-centered design of technology products. The research results and the methods presented provide insights for developers and decision-makers in the fields of transportation, IT, vehicle development and general product design., (© The Author(s) 2023.)
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- 2023
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25. Automated quantification of cartilage quality for hip treatment decision support.
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Ruckli AC, Schmaranzer F, Meier MK, Lerch TD, Steppacher SD, Tannast M, Zeng G, Burger J, Siebenrock KA, Gerber N, and Gerber K
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- Acetabulum surgery, Contrast Media, Hip Joint surgery, Humans, Magnetic Resonance Imaging methods, Cartilage, Articular diagnostic imaging, Gadolinium
- Abstract
Purpose: Preservation surgery can halt the progress of joint degradation, preserving the life of the hip; however, outcome depends on the existing cartilage quality. Biochemical analysis of the hip cartilage utilizing MRI sequences such as delayed gadolinium-enhanced MRI of cartilage (dGEMRIC), in addition to morphological analysis, can be used to detect early signs of cartilage degradation. However, a complete, accurate 3D analysis of the cartilage regions and layers is currently not possible due to a lack of diagnostic tools., Methods: A system for the efficient automatic parametrization of the 3D hip cartilage was developed. 2D U-nets were trained on manually annotated dual-flip angle (DFA) dGEMRIC for femoral head localization and cartilage segmentation. A fully automated cartilage sectioning pipeline for analysis of central and peripheral regions, femoral-acetabular layers, and a variable number of section slices, was developed along with functionality for the automatic calculation of dGEMRIC index, thickness, surface area, and volume., Results: The trained networks locate the femoral head and segment the cartilage with a Dice similarity coefficient of 88 ± 3 and 83 ± 4% on DFA and magnetization-prepared 2 rapid gradient-echo (MP2RAGE) dGEMRIC, respectively. A completely automatic cartilage analysis was performed in 18s, and no significant difference for average dGEMRIC index, volume, surface area, and thickness calculated on manual and automatic segmentation was observed., Conclusion: An application for the 3D analysis of hip cartilage was developed for the automated detection of subtle morphological and biochemical signs of cartilage degradation in prognostic studies and clinical diagnosis. The segmentation network achieved a 4-time increase in processing speed without loss of segmentation accuracy on both normal and deformed anatomy, enabling accurate parametrization. Retraining of the networks with the promising MP2RAGE protocol would enable analysis without the need for B1 inhomogeneity correction in the future., (© 2022. The Author(s).)
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- 2022
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26. Perioperative Multimodal Pain Management Approach in Older Adults With Polytrauma.
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Shafeeq H, DiGiacomo JC, Sookraj KA, Gerber N, Bahr A, Talreja ON, Munnangi S, Cardozo-Stolberg S, and Angus LDG
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- Acetaminophen therapeutic use, Aged, Analgesics, Opioid therapeutic use, Humans, Pain Management methods, Pain, Postoperative drug therapy, Pain, Postoperative etiology, Retrospective Studies, Multiple Trauma complications, Multiple Trauma surgery, Opioid-Related Disorders
- Abstract
Introduction: The use of intravenous (IV) acetaminophen (APAP) postoperatively in older adults may be a beneficial strategy. We implemented a multimodal pain management approach in our hospital in 2015, with IV APAP being the first-line therapy., Materials and Methods: This was a retrospective, single-center, observational cohort study of polytrauma, orthopedic surgical patients aged ≥50 y. Patients admitted in 2017, postimplementation of pain protocol, were categorized as the exposed patients. Patients in the year 2014 served as the historical cohort. The two primary outcomes evaluated were postoperative opioid consumption in morphine milligram equivalents (MMEs) and patient pain scores., Results: In total, 121 eligible patients were identified for this study; 22 historical control patients and 99 exposed patients. We observed a significant reduction in postoperative opioid use up to 48 h postoperatively (20.9 ± 27 versus 4.3 ± 12.4 MME [P < 0.05] at 24 h and 19.8 ± 31.2 versus 2.1 ± 11.3 MME [P < 0.05] at 48 h, respectively). The mean opioid consumption remained significantly lower in patient subgroup of age ≥74 y with no difference in the mean pain scores (1.5 ± 1.5 versus 1.9 ± 1.6 [P = 0.48] at 24 h and 1.5 ± 1.8 versus 2.0 ± 1.5 [P = 0.21] at 48 h postoperatively in the historical versus exposed cohort, respectively). Exposed patients had a shorter hospital length of stay than control patients (5.0 [3, 7] versus 6.5 [5, 9.5] d; P = 0.01)., Conclusions: The use of multimodal pain management with IV APAP as first-line therapy was associated with reduced opioid use in the perioperative setting for older adults with polytrauma., (Copyright © 2022 Elsevier Inc. All rights reserved.)
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- 2022
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27. Rapid Absolute Neutrophil Count Testing Guides Targeted Antimicrobial Therapy in Febrile Pediatric Oncology Patients.
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Gerber N, Vella A, Racine-Brzostek S, and Platt SL
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- Anti-Bacterial Agents therapeutic use, Child, Fever drug therapy, Fever etiology, Humans, Retrospective Studies, Neoplasms complications, Neoplasms drug therapy, Neutrophils
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Objectives: It is well established that early antibiotic administration leads to improved outcomes in febrile neutropenic patients. To achieve this, many institutions administer empiric antibiotics to all febrile oncology patients in the emergency setting, before knowing their neutropenic status. This study evaluates the role of rapid absolute neutrophil count (ANC) testing in the targeted antimicrobial management of nonneutropenic febrile oncology patients., Methods: We conducted a retrospective review of patients 19 years or younger presenting to the pediatric emergency service with an oncologic process and fever or history of fever. We examined the administration of antibiotics and outcomes in nonneutropenic patients., Results: We included 101 patient encounters, representing 62 distinct patients. The rapid ANC test influenced antibiotic management in 94% (95/101) of patient encounters and resulted in no antibiotics or targeted antibiotic therapy in 88% (60/68) of nonneutropenic patients. Use of the rapid ANC test to guide treatment would have spared antibiotic administration in 68% (46/68) of well-appearing nonneutropenic patients with no alternate indication. No well-appearing, nonneutropenic patient had a positive blood culture, and only 1 required hospital admission on a repeat visit., Conclusions: The rapid ANC is a useful tool to balance the goal of early antibiotic administration in febrile neutropenic oncology patients while promoting antibiotic stewardship in this vulnerable population., Competing Interests: Disclosure: The authors declare no conflict of interest., (Copyright © 2021 Wolters Kluwer Health, Inc. All rights reserved.)
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- 2022
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