Mara Duffles
Federal University of Minas Gerais, Brazil
Title: Prevention of abdominal adhesions and healing skin after peritoniectomy using low level laser
Biography
Biography: Mara Duffles
Abstract
Background: Adhesions commonly occur after abdominal surgery and can cause bowel obstruction, chronic abdominal pain and infertility. Their prevention remains a challenge.
Objectives: To evaluate the effects of the application of low-level lasers on the prevention of adhesions and scarring of the skin after peritoniectomia.
Method: 24 New Zealand breed male rabbits, approximately 2months of age, were randomly divided into 3 groups (n=8): GC—control group not subjected to laser, GL1—group with laser application at a dose of 0.2 J, and GL2—group with laser application at a dose of 3.6 J. All animals performed peritoniectomia. After 14 days postsurgery, the animals were killed and adhesion formation was evaluated qualitatively and quantitatively. Differences were considered significant at P<0.05.
Results: The adhesion formation was observed in100% of the rabbits from groups GC and GL1, as compared to 37.5% of the rabbits from group GL2 (P<0.01). The evaluation of the vascularization and tenacity of adhesions among the groups showed no significant difference. In groups CG and GL1, 72% and 83% of adhesions were verified between visceras, respectively where as in GL2 occurred among abdominal wall. The tensile strength of the skin between the groups was not significant (P=0.3106). The resistance of abdominal wall segments without skin segments between groups GL2 and GC were higher than in GL1 (P=0.01).
Conclusion: Low-level laser is effective in preventing intra-abdominal adhesions in rabbits without compromising strength and healing of the abdominal wall.