Publications by authors named "Feurer I"

Background: Over the last decade, the number of simultaneous heart-kidney transplants (SHKTs) has increased dramatically. There are few reports of renal allograft outcomes in these high acuity patients. The goal of the present study was to identify variables that were related to early adverse outcomes (EAOs), including delayed graft function (DGF), primary non-function (PNF), and renal allograft futility (RAF) after SHKTs.

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Purpose: Severe obesity is a barrier to listing for kidney transplantation due to concern for poor outcomes. This study aims to compare bariatric surgery with medical weight loss as a means of achieving weight loss and subsequent listing for renal transplant. We hypothesize that bariatric surgery will induce greater frequency of listing for transplant within 18 months of study initiation.

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Background: A major change to deceased-donor kidney allocation in the United States, Kidney Allocation System 250 (KAS250), was implemented on March 15, 2021. Evaluating the consequences of this policy on critical system performance metrics is critical to determining its success.

Methods: We performed a retrospective analysis of critical performance measures of the kidney transplant system by reviewing all organs procured during a 4-y period in the United States.

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Introduction: Data on long-term outcomes following A2/A2B to B kidney transplants since the 2014 kidney allocation system (KAS) changes are few. The primary aim of this study is to report our 7-year experience with A2/A2B to B kidney transplants and to compare post-transplant outcomes of A2/A2B to a concurrent group of B to B kidney transplants. Additionally, the study evaluates the impact of pre-transplant anti-A1 titers on survival outcomes in A2/A2B transplants.

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Introduction: Few studies evaluate the interplay of attending and resident learning curves in surgical education. Anastomotic time is known to be correlated with transplant outcomes in kidney transplantation. We aimed to evaluate the correlation between the combination of resident and attending experience and anastomotic time in kidney transplantation.

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Introduction: Utilization of hepatitis C viremic (HCV+) deceased donor kidneys (DDKT) for aviremic recipients increases opportunities for transplantation with excellent short-term outcomes. Our primary aim was to understand longer-term outcomes, specifically assessing kidney and liver function in the first year posttransplant.

Methods: This was a retrospective single-center study of adult DDKT recipients of HCV+ kidneys (cases) matched 1:1 to recipients of HCV- kidneys (comparators).

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Background: Transplantation of hearts from hepatitis C virus (HCV)-positive donors has increased substantially in recent years following development of highly effective direct-acting antiviral therapies for treatment and cure of HCV. Although historical data from the pre-direct-acting antiviral era demonstrated an association between HCV-positive donors and accelerated cardiac allograft vasculopathy (CAV) in recipients, the relationship between the use of HCV nucleic acid test-positive (NAT+) donors and the development of CAV in the direct-acting antiviral era remains unclear.

Methods And Results: We performed a retrospective, single-center observational study comparing coronary angiographic CAV outcomes during the first year after transplant in 84 heart transplant recipients of HCV NAT+ donors and 231 recipients of HCV NAT- donors.

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Introduction: The COVID-19 pandemic allowed for the rapid implementation of telemedicine for kidney transplant patients; however, widespread adoption may worsen existing health care inequities among vulnerable populations. This study aimed to characterize telemedicine utilization by kidney transplant patients during the early pandemic with particular attention to healthcare equity.

Methods: A retrospective analysis of kidney transplant patients interacting with telemedicine was performed.

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Idiopathic condylar resorption (ICR), though a rare event, is associated with severe detrimental sequelae for the patient. To date, the etiology remains unknown, and treatment strategies are highly controversial. Therefore, the aim of this study is to present an analysis of the consensus- and evidence-based approach to ICR by a German interdisciplinary guideline project of the AWMF (Association of the Scientific Medical Societies in Germany).

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Background: Characteristics of incisional hernia (IH) formation after live donor nephrectomy (LDN) are not well-defined. The goal of this study was to describe the incidence of IH within 3 years after LDN and identify risk factors contributing to their formation.

Methods: We performed a single-center, retrospective review of all LDN between February 2013 and October 2018.

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Rationale & Objective: Patients with advanced kidney disease are at risk for cognitive impairment, which may persist after kidney transplantation. We sought to understand changes in neurocognitive function domains utilizing comprehensive cognitive assessments.

Study Design: Prospective cohort study.

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Background: Societal factors that influence wait-listing for transplantation are complex and poorly understood. Social determinants of health (SDOH) affect rates of and outcomes after transplantation.

Methods: This cross-sectional study investigated the impact of SDOH on additions to state-level, 2017-2018 kidney and liver wait-lists.

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Importance: Unilateral vocal fold paralysis (UVFP) is a common and life-changing complication of cancer, trauma, and an estimated 500 000 head, neck, and chest surgeries performed annually in the US, among other causes (eg, idiopathic). Consequent disabilities are profound and often permanent and can include severe voice, swallowing, and breathing dysfunction and concomitant anxiety, isolation, and fear. Physiological measures often correlate poorly with patient-reported disability.

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Introduction: Due to potentially severe sequelae (impaired growth, condylar resorption, and ankylosis) early diagnosis of chronic rheumatic arthritis of the temporomandibular joint (TMJ) and timely onset of therapy are essential. Aim: Owing to very limited evidence the aim of the study was to identify and discuss controversial topics in the guideline development to promote further focused research. Methods: Through a systematic literature search, 394 out of 3771 publications were included in a German interdisciplinary guideline draft.

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: In the non-transplant population, hyperlipidaemia has shifted from targeting LDL goals to statin intensity-based treatment. It is unknown whether this strategy is also beneficial in cardiac transplantation. : This single-centre retrospective study evaluated the effect of statin use and intensity on time to cardiac allograft vasculopathy (CAV) after cardiac transplantation.

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Background: While liver transplantation (LT) with neoadjuvant chemoradiation is increasingly utilized for the management of unresectable cholangiocarcinoma (CCA), data on post-LT survival are limited.

Methods: We identified 844 patients who underwent LT (2002-2019) for nonincidental (CCA listing) or incidental (CCA on explant, not at listing) CCA in the Scientific Registry of Transplant Recipients. Kaplan-Meier and multivariable proportional hazards regression methods evaluated the effects of patient characteristics, donor type, transplant era (before/after 2010), and center volume (center-level CCALTs/active year) on the risk of graft failure and patient mortality.

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Unlabelled: Transplantation of hepatitis C viremic (HCV+) deceased donor kidney transplants (DDKT) into aviremic (HCV-) recipients is a strategy to increase organ utilization. However, there are concerns around inferior recipient outcomes due to delayed initiation of direct-acting antiviral (DAA) therapy and sustained HCV replication when implemented outside of a research setting.

Methods: This was a retrospective single-center matched cohort study of DDKT recipients of HCV+ donors (cases) who were matched 1:1 to recipients of HCV- donors (comparators) by age, gender, race, presence of diabetes, kidney donor profile index, and calculated panel-reactive antibody.

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Objectives: To mitigate waiting time forlivertransplant for hepatocellular carcinoma, partial or split liver transplant has been utilized. There was concern that regeneration of these grafts would negatively affect oncologic outcomes.

Materials And Methods: We compared posttransplant graft survival between hepatocellular carcinoma whole livertransplant and partial/splitlivertransplant using Scientific Registry of Transplant Recipients data (2002-2017).

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Background: As the organ-shortage crisis continues to worsen, many patients in need of a kidney transplant have turned to social media to find a living donor. The effect of social media on living kidney donation is not known. The goal of this study is to investigate the influence of social media on those interested in donating a kidney.

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Objectives: Previous studies of liver transplant recipients have reported discrepancies with regard to gender and/or sex differences but have focused on pretransplant outcomes. Female candidates are less likely to receive liver transplant and more likely to die or be delisted than their male counterparts. Here, we examined differences in men versus women with alcoholic liver disease before liver transplant and the effects of these differences on posttransplant survival.

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Despite the divergent disease biology of cholangiocarcinoma (CCA) and hepatocellular carcinoma (HCC), wait-list prioritization is identical for both diagnoses. We compared wait-list and posttransplant outcomes between CCA and HCC liver transplantation patients with Model for End-Stage Liver Disease exceptions using Scientific Registry of Transplant Recipients data. The 408 CCA candidates listed between 2003 and mid-2017 were matched to 2 HCC cohorts by listing date (±2 months, n = 816) and by Organ Procurement and Transplantation Network (OPTN) region and date (±6 months, n = 408).

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Introduction: Patient-reported outcome (PRO) measures are increasingly developed with multisite, representative patient populations so that they can serve as a primary endpoint in clinical trials and longitudinal studies. Creating multisite infrastructure during PRO measure development can facilitate future comparative effectiveness trials. We describe our protocol to simultaneously develop a PRO measure and create a collaborative of tertiary care centres to address the needs of patients with unilateral vocal fold paralysis (UVFP).

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Background: The 2014 pancreas allocation system (PAS) intended to decrease geographic variability in listing practices for simultaneous pancreas and kidney (SPK) transplant and define eligibility criteria for those with type 2 diabetes mellitus (T2DM). Our primary aims were to evaluate geographic disparities in access to SPK and assess T2DM SPK listings in the pre- and post-PAS eras.

Methods: Adult listings for SPK and kidney transplant (pre-PAS, January 2010 to October 29, 2014; post-PAS, October 30, 2014, to June 2, 2017) were identified in the Scientific Registry of Transplant Recipients.

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Purpose: The EPIC-26 (Expanded Prostate Cancer Index Composite-Short Form) is a validated questionnaire for measuring health related quality of life. However, the relationship between domain scores and functional outcomes remains unclear, leading to potential confusion about expectations after treatment. For instance, does a sexual function domain score of 80 mean that a patient can achieve erection sufficient for intercourse? Consequently we sought to determine the relationship between the domain score and the response to obtaining the best possible outcome for each question.

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Background: Hepatitis C virus (HCV) cirrhosis is the leading indication for liver transplantation in the United States, although nonalcoholic steatohepatitis (NASH) is on the rise. Increasingly effective HCV antivirals are available, but their association with diagnosis-specific liver transplantation rates and early graft survival is not known.

Methods: The Scientific Registry of Transplant Recipients database records were retrospectively stratified by HCV antiviral era: interferon (2003-2010), protease inhibitors (2011-2013), and direct-acting antivirals (2014 to present).

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