Cartilagem auricular suína e tela de polipropileno: análise biomecânica e tratamnto cirúrgico da hérnia perineal em cães.

Abstract

In order to evaluate the behavior of materials in the perineal hernia in dogs, this dissertation is compounded with two chapters. The former is a biomechanical test comparing swine auricular cartilage materials preserved in 98% glycerin and polypropylene mesh, as the tensile strength. The latter is a comparative study of surgical treatment of perineal hernia in dogs by lifting technique of the internal obturator muscle with reinforcement in swine auricular cartilage or the polypropylene mesh. The first study was conducted in Biomaterials Certbio Laboratory, Campus headquarters in UFCG using six samples of each material with which were performed tensile strength tests. Samples were prepared and cut into sized equal so that the tests were carried out. There was a superiority of polypropylene mesh about swine auricular cartilage, proving to be more resistant to the applied force. The second study was conducted at the Veterinary Hospital in Patos-PB city Campus, in UFCG, using 11 dogs and carrying out 12 surgical procedures, divided into two groups. The CG was composed of the proceedings in which it was used as a reinforcement of hernia a swine auricular cartilage and TG by those who used the polypropylene mesh. Physical and ultrasound tests were performed before surgery and other, 10, 30, 60 and 90 days after the same. During surgery, it was assessed the degree of muscular atrophy, kinds of perineum hernias according to location and which organs were herniated. At post-operative animals were evaluated inferring the presence or absence of complications, evaluation of the surgical wound, pelvic diaphragm resistance, difficult to defecating and urinating, as well as evaluation of the rectum and relapses. Just a CG animal presented relapse after 90 days postoperatively; and two animals, one of the CG and other of TG showed migration of perineal hernia to the contralateral side. The main complications were: a CG animal had urinary incontinence after a postoperative day, which persisted until the end of the trial period. No animal showed infection, sinus or suture dehiscence, but in the early stages (M1, M2) occurred edema and discreet seroma. The swine auricular cartilage preserved is an alternative for proper reinforcement in repairing of perineal hernia by lifting technique of the internal obturator muscle and has presented biological behavior similar to polypropylene mesh without signs of rejection.