PURPOSE: Experimental evaluation of the abdominal wall healing in reoperations on the same surgical site, by means of macroscopic analysis, histological and breaking strength studies of the surgical scar. METHODS: Twenty-four @entity35 were selected and divided in 3 groups (G1, @entity35416 ). A medium longitudinal laparotomy was performed, followed by laparorrhaphy on two synthesis planes, using an interrupted suture technique. The reoperations were performed in the same way, on the same surgical site. On the first day of the study all the 24 @entity35 were operated, on the 30th day the 16 animals belonging to @entity35416 were reoperated, and finally, on the 60th day, the 8 @entity35 from G3 were operated for the third and last time. After 30 days of the last laparotomy of each group, euthanasia was performed. Complications such as adhesions were evaluated during the resection of surgical site. The breaking strength study was performed next, followed by the microscopical collagen analysis, using for that histological cuts stained with picrosirius. RESULTS: The adhesions were prevalent in @entity35416 (16% each) when compared to G1. No significant difference was found in the breaking strength study. Statistically significant difference was observed in collagen concentration analysis. It was found higher mature collagen (type I) as well as total collagen concentration in the groups operated more than once ( @entity35416 ). The highest concentration of mature collagen (p<0,0001) and total collagen (p<0,0021) were found in G3 followed by @entity35416 (in this sequence). CONCLUSION: The highest mature collagen concentration on the experimental groups, points out the importance of inflammatory activity in the healing process; in the resutures of the abdominal wall the surgical scar maturity is faster acquired than in the primary sutures; in relation to the primary sutures, the resutures of the abdominal wall did not influence in the resistance of the surgical scar.

Abdominal wall healing in reoperated XXXX .

@entity35 :: ('10116', 'Species') :: ['rats'] @entity35416 :: ('24584(Tax:10116)', 'Gene') :: ['G2 and G1', 'G2 and G3']
@entity35 :: (10116,Species) :: ['rats']
