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Comparison of pancreas transplantation with portal venous and enteric exocrine drainage to the standard technique utilizing bladder drainage of exocrine secretions.

Although bladder drainage of pancreatic exocrine secretions has been reported to decrease morbidity and improve pancreas allograft survival, significant complications remain associated with this technique. Furthermore, this technique requires systemic venous drainage of pancreas allografts. Evidence suggests that portal venous drainage of pancreas grafts prevents hyperinsulinemia and improves lipoprotein composition. This report documents our initial experience with portal venous and enteric exocrine drainage of pancreas allografts (portal/enteric technique) and compares it with the standard technique of systemic venous and bladder exocrine drainage (systemic/bladder technique). Patient and allograft survival, as well as allograft function, were comparable for the two procedures. There were no significant technical complications in this pilot series. Enteric exocrine drainage was associated with a significant reduction in the incidence of acidosis and dehydration when compared with bladder drainage (P<0.005). The portal/enteric technique also avoided reoperation for enteric conversion, as was required by 33% of patients in the systemic/bladder group. The incidence and outcome of allograft rejection were similar for the two techniques. These data suggest that combined pancreas/kidney transplantation with portal venous and enteric exocrine drainage is safe and results in outcomes similar to the standard technique, while eliminating many complications of bladder drainage. These findings should encourage additional studies to determine the consequences of portal venous drainage.