title: Intestinal intussusception valve for prevention of duodenogastric reflux after partial gastrectomy. An experimental study in dogs.
abstract: For prevention of duodenogastric reflux after partial gastric resection three types of intussusception valves were developed and tested in an experimental study in dogs. The three experimental groups were compared with regard to duodenogastric reflux and body weight with a control group of dogs subjected to partial gastric resection (BI-dogs). Reflux was determined by use of an isotope method whereby the reflux was graded according to radioactivity measured in gastric samples. A gastroduodenal valve constructed in five dogs failed, probably because of its inability to withstand the high pressure during the duodenal cap systole. Interposition of an isoperistaltic jejunal segment provided with an intussusception valve between the gastric remnant and the duodenum was successful in preventing reflux. Reflux was demonstrated in ten out of 13 dogs with conventional gastroduodenostomy whereas no reflux was found in the dogs with competent intestinal intussusception valves. The satisfactory postoperative weight recovery indicated that the procedure had no harmful effects on gastrointestinal propulsion and absorption.
mesh_terms: D000818:Animals; D001835:Body Weight; D004285:Dogs; D004378:Duodenal Diseases / Q000209:etiology / Q000517:prevention & control*; D004386:Duodenum / Q000601:surgery; D005260:Female; D005743:Gastrectomy / Q000009:adverse effects* / Q000379:methods; D005764:Gastroesophageal Reflux / Q000209:etiology / Q000517:prevention & control*; D007583:Jejunum / Q000601:surgery*; D008297:Male; D008722:Methods; D013270:Stomach / Q000601:surgery