[Experimental realization of a continent ileocolic valve in rats]

The ileocecal valve plays a primordial role in pediatric digestive disorders. Various technical procedures have been proposed based on formation of an anastomosis with invagination of the distal extremity of the ileal segment into the colic portion. A resection of 20% of the small intestine and an ileocolic anastomosis were performed in the rat using three different methods: simple end-to-end ileocolic anastomosis, ileocolic anastomosis with invagination of ileal segment, and ileocolic anastomosis with ileal hemi-valve intubated into colon. Three animals died in the first group, the surviving three animals presenting massive reflux on barium meal examination. Of the 7 animals in the second group, 6 developed signs of occlusion from anastomotic stenosis. Two of the 10 animals the third group died, one before the 15th and one before the 40th day, as a result of anastomotic stenosis. Autopsy of the 8 survivors sacrificed after 3 months showed permeable anastomoses.