[Evaluation of postoperative adhesions in rats submitted to peritoneostomy with polypropylene mesh associated to nitrofurazone].
BACKGROUND
Peritoneal injuries, common in per and postoperative, lead to the formation of adhesions. The use of polypropylene mesh increases the postoperative adhesions incidence. Based on the fact of nitrofurazone accelerates the healing process, a possible action on peritoneal adhesions was cogitated.


OBJECTIVE
To evaluate postoperative adhesions in rats submitted to peritoneostomy with polypropylene mesh fixation associated to nitrofurazone.


METHODS
Thirty-three Wistar rats were separated into three groups of eleven animals each one. In group I was performed the laparotomy with exposition of the abdominal cavity followed by the laparotomy suture; in group II was performed the resection of a abdominal wall fragment followed by polypropylene mesh fixation on the gap and in group III was performed the same done in group II, but the mesh was previously impregnated with nitrofurazone. After 45 days the animals were sacrificed and necropsied.


RESULTS
Seven animals of group I had no adhesions (degree 0), two had degree 1 adhesions and two had degree 2. In group II, one animal was classificated as degree 3 and ten as degree 4. In group III, one had degree 0, eight had degree 3 and one had degree 4 (one animal died before 45 days). All adhesions found involved the abdominal wall; ten animals had adhesions involving only omentum (group I = 4; group II = 1 and group III = 5); eleven animals had adhesions involving omentum, small bowel and other abdominal organs (group II = 10; group III = 1); three animals had adhesions involving only small bowel, all belonged to group III. Fourteen animals had adhesions involving small bowel, of these ten belonged to group II (nine with more than one fixation point) and four belonged to group III (three with just one fixation point).


CONCLUSIONS
The association of nitrofurazone with polypropylene mesh did not reduce significantly the postoperative adhesions incidence in rats, but reduced the intensity and severity of these adhesions.
Diogo-Filho
Augusto
A
Departamento de Cirurgia, Faculdade de Medicina da Universidade Federal de Uberlândia, MG. diogofilho@netsite.com.br <diogofilho@netsite.com.br>
Lazarini
Bárbara Cunha Mello
BC
Vieira-Junyor
Floriano
F
Silva
Gisele Juliana
GJ
Gomes
Heitor Luiz
HL
D000818:Animals; D000891:Anti-Infective Agents, Local / Q000627:therapeutic use*; D009583:Nitrofurazone / Q000627:therapeutic use*; D010537:Peritoneum / Q000473:pathology / Q000601:surgery*; D011126:Polypropylenes / Q000627:therapeutic use*; D051381:Rats; D017208:Rats, Wistar; D012720:Severity of Illness Index; D013526:Surgical Mesh; D000267:Tissue Adhesions / Q000473:pathology / Q000517:prevention & control*
D000891:Anti-Infective Agents, Local; D011126:Polypropylenes; D009583:Nitrofurazone