Construction of a continent catheterizable urinary valve from a gastric segment in dogs.

We constructed a continent, catheterizable urinary valve from a gastric segment in 7 dogs. A vascularized gastric segment was isolated from the greater curvature and was tubularized. A cuff was made at the distal end of the tube. The gastric tube was anastomosed to the dome of the bladder with intussusception of the cuff portion into the bladder cavity. The valve provided continence over a wide range of bladder pressure. However, an ulcer of the bladder developed where the gastric mucosa of the cuff faced the bladder mucosa in 5 dogs, with a resultant intraperitoneal perforation in 2 dogs. The development of the bladder ulcer may be a serious complication of an anastomosis of an isolated gastric segment to the bladder.