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ULHT - Universidade Lusofona de Humanidades e Tecnologias
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Papers by Adam Shen
American Journal of Transplantation
Pancreas, 2015
The aim of the study was to assess outcomes of pancreas retransplantation versus primary pancreas... more The aim of the study was to assess outcomes of pancreas retransplantation versus primary pancreas transplantation. Data from the United Network for Organ Sharing database on all adult (age, ≥18 years) subjects who received pancreas and kidney-pancreas transplants between 1996 and 2012 were analyzed (n = 20,854). The subjects were analyzed in the following 2 groups: retransplant (n = 1149) and primary transplant (n = 19,705). Kaplan-Meier analysis demonstrated significantly different patient survival (P < 0.0001) and death-censored graft survival (P < 0.0001) between the primary transplant versus retransplant subjects. Allograft survival was significantly poorer in the retransplantation group. Patient survival was greater in the retransplant group. The results of our study differ from previous studies, which showed similar allograft survival in primary and secondary pancreas transplants. Further studies may elucidate specific patients who will benefit from retransplantation. At the present time, it would appear that pancreas retransplantation is associated with poor graft survival and that retransplantation should not be considered for all patients with primary pancreatic allograft failure.
International Journal of Angiology, 2015
Clinical Transplantation, 2013
Forty-eight hour kidney transplantation admissions are a feasible option in selected recipients o... more Forty-eight hour kidney transplantation admissions are a feasible option in selected recipients of live-donor allografts through the use of standardized post-operative protocols, multidisciplinary team patient care, and intensive follow-up at outpatient centers. Age, gender, and pre-transplant dialysis status did not impact the ability to achieve 48-hour admissions. We did not identify any other pre-operative risk factors that contributed to increased length of stay. Although ABO and highly sensitized recipients had longer lengths of stay, the subgroup was too small to achieve statistical significance. We did not encounter any readmissions within the first seven post-operative days. Further improvements in clinical management will enhance the potential to shorten the length of hospital stay for all kidney transplant recipients.
Case Reports in Surgery, 2019
This patient suffered multiple injuries in a motor vehicle crash. She had an optional IVC filter ... more This patient suffered multiple injuries in a motor vehicle crash. She had an optional IVC filter placed in the usual fashion and location which resulted in a functional obstruction of the third part of the duodenum much as one would expect with a Superior Mesenteric Artery (SMA) syndrome. The symptoms persisted over the sixteen-day filter dwell time and resolved completely with the retrieval of the filter.
Surgical Case Reports
There is a well-established body of literature in the management of vascular injuries that unders... more There is a well-established body of literature in the management of vascular injuries that underscores the benign natural history of minor so-called occult arterial injuries. The standard approach for the management of the proximity extremity wound has evolved into one of watchful waiting. We present a case of an occult arterial injury that declared itself with an acute arterial bleed after about 30 hours of observation indicating that caution and preparation remain critical in the management of these patients.
American Journal of Transplantation
Pancreas, 2015
The aim of the study was to assess outcomes of pancreas retransplantation versus primary pancreas... more The aim of the study was to assess outcomes of pancreas retransplantation versus primary pancreas transplantation. Data from the United Network for Organ Sharing database on all adult (age, ≥18 years) subjects who received pancreas and kidney-pancreas transplants between 1996 and 2012 were analyzed (n = 20,854). The subjects were analyzed in the following 2 groups: retransplant (n = 1149) and primary transplant (n = 19,705). Kaplan-Meier analysis demonstrated significantly different patient survival (P < 0.0001) and death-censored graft survival (P < 0.0001) between the primary transplant versus retransplant subjects. Allograft survival was significantly poorer in the retransplantation group. Patient survival was greater in the retransplant group. The results of our study differ from previous studies, which showed similar allograft survival in primary and secondary pancreas transplants. Further studies may elucidate specific patients who will benefit from retransplantation. At the present time, it would appear that pancreas retransplantation is associated with poor graft survival and that retransplantation should not be considered for all patients with primary pancreatic allograft failure.
International Journal of Angiology, 2015
Clinical Transplantation, 2013
Forty-eight hour kidney transplantation admissions are a feasible option in selected recipients o... more Forty-eight hour kidney transplantation admissions are a feasible option in selected recipients of live-donor allografts through the use of standardized post-operative protocols, multidisciplinary team patient care, and intensive follow-up at outpatient centers. Age, gender, and pre-transplant dialysis status did not impact the ability to achieve 48-hour admissions. We did not identify any other pre-operative risk factors that contributed to increased length of stay. Although ABO and highly sensitized recipients had longer lengths of stay, the subgroup was too small to achieve statistical significance. We did not encounter any readmissions within the first seven post-operative days. Further improvements in clinical management will enhance the potential to shorten the length of hospital stay for all kidney transplant recipients.
Case Reports in Surgery, 2019
This patient suffered multiple injuries in a motor vehicle crash. She had an optional IVC filter ... more This patient suffered multiple injuries in a motor vehicle crash. She had an optional IVC filter placed in the usual fashion and location which resulted in a functional obstruction of the third part of the duodenum much as one would expect with a Superior Mesenteric Artery (SMA) syndrome. The symptoms persisted over the sixteen-day filter dwell time and resolved completely with the retrieval of the filter.
Surgical Case Reports
There is a well-established body of literature in the management of vascular injuries that unders... more There is a well-established body of literature in the management of vascular injuries that underscores the benign natural history of minor so-called occult arterial injuries. The standard approach for the management of the proximity extremity wound has evolved into one of watchful waiting. We present a case of an occult arterial injury that declared itself with an acute arterial bleed after about 30 hours of observation indicating that caution and preparation remain critical in the management of these patients.