Complications of the Mainz pouch II (sigma rectum pouch)

Objective: The complications of the sigma rectum pouch were analyzed. Methods: A total of 60 patients who underwent a construction of the Mainz p ouch II was analyzed retrospectively. Data on early complications was avail able for all patients, while long-term follow-up data was available for 50 patients. Results: Perioperative mortality was nil. Early complications were encounte red in 2 (3.3%) patients. Oral alkalizing supplementation therapy was requi red in 30 (60%) of the patients; 3 (6%) patients needed hospitalization for severe acidosis and hypokalemia. Hydronephrosis developed in 5 (5%) of 98 renoureteral units anastomosed. Acute pyelonephritis was observed in 3 (8%) patients. All of the patients were continent except for 1 female patient w ho had had previous radiotherapy to the pelvis. The mean voiding frequency during the day and night was 5.1 +/-1.1 and 1.9 +/-0.7, respectively. The p sychological state and general health of 2 patients became progressively wo rse until they died of probable malnutrition and metabolic abnormalities. M echanical bowel obstruction developed in 1 patient 2 years after surgery. Conclusion: The complication rate of the Mainz pouch II appears to be accep table with a median follow-up of 31 months. Patient selection and cooperati on are of paramount importance for a successful outcome. Copyright (C) 2001 S. Karger AG, Basel.