Confecção de piloros artificiais em íleo terminal sem secção de musculatura em ratos: estudo anátomo-patológico

Abstract

BACKGROUND: To study, experimentally, the reduction of intestinal transit through artificial pylorus in terminal ileum of rats, without sectioning the enteric muscles. METHODS: The study was carried out in two groups of 20 rats each. Four pylori were made in the terminal ileum of each animal with sero-muscular stitches circumferentially spread around the intestinal loop. Group 1 rats were killed after 15 days and those from group 2 after 30 days. The intestinal circumference was measured during surgery and post-mortem. RESULTS: Group 1 showed a mean 3mm dilatation in the first pylorum and 4.15mm in the fourth one. In group 2 the mean dilatation was 7.50 mm in the first pylorum and 5.75mm in the fourth one. The presence of the well defined formation of the pylori were evident from anatomical studies. CONCLUSION: It is thus not necessary to remove or section the small intestine muscles nor section the intestinal neural plexus to promote intestinal dilatation and reduce intestinal transit with this method.