Experimental models of longitudinal abdominal incisional hernia in rats

Abstract

Abdominal incisional hernias in rats has been produced after resection of a segment of abdominal muscle. In a attempt to create a model of incisional hernia in rats, without resection of abdominal muscle, the following surgical procedures were performed: (a) Rats anesthetized with ether were submitted to a 4 cm long median incision, supra and infraumbilical, followed by dissection of the subcutaneous tissue 1.5 cm laterally to the median line in each side; after, one incision was performed in the linea alba and peritoneum, with the same extension of the skin incision; the skin incision was sutured. (b) Rats were submited to a suprapubic transversal incision and a scissors introduced through this incision and used to dissect the subcutaneous tissue at least 1.5 cm for each side of median line; after, the linea alba and peritoneoum were incised and the transversal skin incision sutured. (c) For control, rats were submitted to a resection of a 2.5 x 4 cm of the abdominal muscles, creating a large defect in the abdominal wall. All the animal, submitted to the three different procedures, developed similar well constituted hernias. We concluded that abdominal incisonal hernias are easily induced in rats after an incision of the abdominal wall, without partial resection of abdominal muscle, since the subcutaneous have been dissected at least 1.5 cm laterally to the median line.

Incisional hernia repair in rats: description of the sublay technique under videomagnification system

“…Incisional hernia was induced in all animals, based on the model described by Paulo et al 18 . After that, the incisional hernia was immediately corrected by the sublay method, adapted from the surgical procedure performed in humans described by Miranda et al 19 .…”

Efeito do ultra-som na prevenção da hérnia incisional mediana no rato

“…A seguir, a linha alba e o peritônio parietal foram seccionados numa extensão de 30mm, mantendo-se íntegra a pele suprajacente. Apenas a ferida cutânea foi suturada com dois pontos de categute simples 5-0 7 .…”