RESUMO
Split-nipple [n=10] and the submucosal tunnel [n=10] antireflux uretero-intestinal anastomotic techniques were performed employing 12 female pigs with average weight ranging from 35 to 40 kg. Preoperative intestinal preparation, both chemical and mechanical, was achieved 48 hours prior to surgery. Renal panel was also performed for all animals pre- and postoperatively. A 5-port trans-peritoneal technique was employed. The procedure comprised bilateral dissection of the ureters, hemicystectomy, isolation of a 20 cm ileal segment, ureter-intestinal anastomosis and ileo-cystoplasty. Animals were followed up for a period ranging from two weeks to three months. Bilateral antireflux uretero-ileal anastomoses were completed in all 10 animals with average total operative time of 4.5 hours and mean blood loss of 40 ml. All technical maneuvers could be performed completely intracorporealy using laparoscopic techniques. Mean pre- and postoperative serum creatinine was 1.1 and 1.2 mg%, respectively. All animals were non refluxing, however, two of the split-nipple uretero-ileal anastomosis had ureteral strictures. There were no significant metabolic effects of using intestinal segments in this procedure