Results from the application of extramucous valvular pyloroplasty

A method for pyloroplasty with complete reconstruction of the pyloric area is presented.

The method had been preliminarily tested in dogs and then clinically applied in 28 peptic ulcer patients. The task was solved by pneumatic preparation and ring-shaped removal of pylorus musculature within a zone of 3.0-3.5 cm the integrity of the underlying mucous muff was preserved and the latter was invaginated into the lumen. Thus a circular mucous-submucous valve in the region of the gastroduodenal ligament was formed. Due to the preserved anatomical integrity, innervation and blood supply of this mucous-submucous layer after its pleating created a zone wide like a normal pylorus between the stomach and duodenum.

The duration of the postoperative follow-up was between 6 months and 10 years. The newly created valve looked like a normal pylorus. It was 6 mm thick and 11 mm high and protruded into the lumen. The submucous layer was doubled, richly vascularized, and the muscular layers were continuous.

This operative technique could successfully be applied in gastric surgery for preventing the dumping syndrome and gastric reflux when pyloroplasty is required.