Evaluation of a vessel-sealing device for use in laparoscopic ovariectomy in mares

Objective-To evaluate a vessel-sealing instrument (LigaSure(TM)) as a method for hemostasis of the ovarian vasculature. Study Design-Prospective study. Animals or Sample Population-Thirteen mares (8 experimental, 5 patients), aged 2 to 20 years and weighing 405 to 500 kg. Methods-Thirteen mares had standing bilateral laparoscopic ovariectomy using a vessel-sealing device (LigaSure) to provide hemostasis. Eight reproductively normal experimental mares were divided into 2 groups: 1 group was re-examined laparoscopically 72 hours and the other group 10 days after the initial standing laparoscopic ovariectomy. The vessel-sealing device uses high current and low voltage, along with pressure, to reorganize the collagen into a translucent seal to achieve hemostasis of the ovarian vasculature. Results-No major operative or postoperative complications were encountered. Complete hemostasis of the ovarian pedicle was accomplished. One mare had a fever for 24 hours' postoperatively; this responded to a single dose of flunixin meglumine. Conclusions-The LigaSure appears to be a safe method for hemostasis of the ovarian vasculature. Clinical Relevance-Benefits of the LigaSure include no foreign material remaining in the abdomen and minimal to no need for surgical dissection before application. The LigaSure eliminates complications with potential ligature slippage and bleeding during dissection. (C) Copyright 2002 by The American College of Veterinary Surgeons.