Ischemic bowel disease following bilateral nephrectomy or renal transplant.

In a 2 year period five patients developed pathologically proved ischemic bowel disease (IBD) following either renal transplantation or bilateral nephrectomy in preparations for transplantation. This entity accounted for 42% of all major gastrointestinal complications in this transplant unit. Three patients presented with abdominal pain and ileus, and two patients developed massive lower gastrointestinal hemorrhage. All five patients had nonocclusive ischemic disease because obstruction of a major intestinal vessel could not be documented in any case. Each patient was treated with bowel resection and three of the five patients survived. Although sepsis, shock, and large doses of immunosuppressive drugs have been implicated in predisposing such patients to IBD, these factors were not uniformly present in our cases. Blood volume redistribution with transient episodes of hypotension, especially during postoperative hemodialysis, may be significant. IBD in uremic patients can occur in the presence or absence of renal transplantation and may be the cause of massive intestinal hemorrhage in these individuals.