To evaluate the potential benefit of recombinant tissue plasminogen activator (rt-PA) as an agent for reducing postoperative adhesions, a rabbit uterine horn model was studied. Fifty-five rabbits underwent laparotomy, at which time the uterus was abraded with scalpel and a thermal injury was induced with electrocautery. Before abdominal closure, rt-PA was applied topically in various dosages. Adhesions were evaluated at a second laparotomy performed 2 weeks later. Treatment significantly reduced both adhesion quantity (P less than 0.001) and adhesion density (P less than 0.001). In the second phase of the study, the efficacy of rt-PA as an adjunct to surgical adhesiolysis was investigated. Again, a dose-related treatment effect was observed (P less than 0.001). No wound healing or bleeding complications were seen.
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