REGO, R. O.; REGO, Renato Otaviano do.
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.