Padronização das técnicas operatórias de autonomização no retalho músculocutâneo transverso do músculo reto do abdome monopediculado: estudo experimental em ratas

Objective: Standardized of delay operations and established which of delay operations is the best in reduce necrosis of the rectus transverse miocutaneous flap. Methods: 80 female Wistar rats ( 250 and 300 grams ) were divided in eight groups with ten rats (n=10). The anesthesia was obteined with Ketamine hydrochloride and 2-(2,6-xilidine)5,6-dihydro-4H-1,3 thiazine hydrochloride. In the group A (control) the rectus transverse miocutaneous flap was undermined and elevated with suture in bed. In the groups B, C, D, E, F e G were accomplished differents techniques of delay operations. The measure of necrosis was accomplished in five day after operation with mould of transparency and pen of fine point in milimetral paper. Results: Statistical analysis was performed with Least Significante Difference test. In the group A (control) the percentage of necrosis was estatistical significante higher than groups B, C, D, E, F, G e H. In the group C the percentage of necrosis was estatistical significante lower than groups H,B,F e G and similar than groups D e E. Conclusions: The delay operation with section rectus abdominis muscles and cauterize deep epigastric superior vessels is the most efective in reduction of necrosis in the rectus transverse miocutaneous flap.