Estimulação ultra-sônica pulsada e contínua no processo cicatricial de ratos submetidos à celiotomia

Abstract

In order to evaluate the healing process of surgical injuries on 45 rats submitted to celiotomy, ultrasonic continuous and pulsed energy was utilized. Forty-five female rats were used, separated in 3 experimental groups with 15 animals in each group. Healing was evaluated by stereometry, considering the volumetric proportion of the material in cellular and tissue samples, obtained from the abdominal wall biopsies at 0, 48, 96 and 144 hours after celiotomy. Ultrasound application on the surgical site was made 24 hours after the intervention. Results obtained with the application of ultrasound in the pulsed variety at 48 hours showed a larger volumetric proportion of polymorphonuclear cells and fibroblast when compared to the control group and to the group which received ultrasound application in the continuous variety (P≤ 0.05). These results showed that the ultrasound application in the pulsed way can be recommended in the treatment of surgical wounds in the abdominal cavity.