David N. Ranney

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OBJECTIVE We sought to understand whether obesity imparts detriment in outcome beyond risk of developing surgical site infection (SSI). SUMMARY BACKGROUND DATA Obesity is a risk factor for SSI following renal transplantation, and has been implicated in inferior patient and graft survival postoperatively. METHODS We conducted a retrospective review of(More)
BACKGROUND Smokers with chronic liver disease can become eligible for transplantation, but some insurers refuse reimbursement pending smoking cessation. STUDY DESIGN Our hypothesis is that liver transplantation candidates and recipients who smoke have inferior survival compared with nonsmokers. Using a retrospective cohort study design, three Cox(More)
Concern exists that liver transplant center substance abuse policies may have an inappropriate and disproportionate impact on marijuana users. Our hypothesis is that patients with chronic liver disease who were marijuana users will have inferior survival. This is a retrospective (1999-2007) cohort study. The primary outcome measure is time-dependent,(More)
BACKGROUND Surgical site infection (SSI) after kidney transplantation has been associated with worse graft and patient survival. Although there are clinical incentives to reduce the incidence of SSI, it is unknown whether these are aligned with financial incentives for payers and providers. We use post-kidney transplant surgical site infection (SSI) to(More)
With the recent regulations limiting resident work hours, it has become more important to understand how residents spend their time. The volume and content of the pages they receive provide a valuable source of information that give insight into their workload and help identify inefficiencies in hospital communication. We hypothesized that above a certain(More)
Extracorporeal blood pumps are used as temporary ventricular assist devices or for extracorporeal membrane oxygenation. The ideal pump would be intrinsically self-regulating, carry no risk of cavitation or excessive inlet suction, be afterload insensitive, and valveless thus reducing thrombogenicity. Currently used technology, including roller, centrifugal,(More)
BACKGROUND Transcatheter valve-in-valve (VIV) procedures are an alternative to standard surgical valve replacement in high risk patients. METHODS Cases in which a commercially approved transcatheter aortic valve replacement (TAVR) device was used for a nonaortic VIV procedure between November 2013 and September 2015 are reviewed. Clinical,(More)
We sought to estimate the effect of smoking on the biliary complication rate following orthotopic liver transplantation. We retrospectively evaluated the records of liver transplant recipients at our center from July 1, 1999 to October 26, 2007. Using Cox proportional hazards models, we estimated the time to the earliest biliary complication (leak or(More)
Occlusive PVT concurrent with chronic liver disease is a common clinical entity among pediatric patients referred for transplantation. The natural history of PVT is unknown. Our aim was to determine, using a retrospective cohort design, if children under 13 yr with chronic liver disease and concomitant PVT have an increased mortality risk prior to and after(More)
Recently, both living and deceased organ donation rates have hit a plateau, despite increases in need for viable organs. One approach to improve donation rate is public education and policy; thus, it is necessary to understand the information the public is receiving regarding organ donation. We hypothesized that primetime medical dramas portray organ(More)