Veterinary Wound Healing Association 5th Congress, Hannover, Germany. May 10-12 2001
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| TRANSENDOSCOPIC AND HISTOLOGIC CONTROL OF THERMAL INJURY ZONES AND WOUND HEALING SUBSEQUENT TO ENDOMETRIAL IRRITATION WITH TRANSENDOSCOPIC ND:YAG LASER AND ELECTROMICROSURGERY C.P.Bartmann 1, and B. Leib 2 1 Clinic for Horses, Hannover School of Veterinary Medicine and 2 Institute for Veterinary Pathology, University of Leipzig, Germany In the field of equine fertility surgery, operative hysteroscopy has offered a considerable advance in the minimal invasive treatment of uterine pathology. Transendoscopic thermal preparation techniques like laser- or electrosurgery have proved to be most reliable especially for the treatment of the frequent intrauterine cysts or adhesions. To determine the effect of Nd:YAG laser surgery on the endometrium and complete uterine wall compared with electrosurgery, standard lesions were made by electrosurgery (monopolar electrosurgical loop electrode and cutting blade) or Nd:YAG laser surgery (bare fiber, core 600 ?m, non contact 80 Watt, contact 25 Watt, exposure time 4 seconds) in four mares on days 1, 4, 7, 14 and 21 prior to hysterectomy. The gross effects (hyperemia, edema, exudate, size of lesions) were controlled transendoscopically before the following lesions were set. Histological evaluation included the parameters amount of carbon and debris, depth of thermal injury, histiocytes and giant cells. Reepithelization of the endometrial surface was complete at day 14 in all wounds ecxcept in those made with the non contact laser. The amount of particulate carbon and the number of histiocytes were similar in the groups. The depth of coagulative necrosis was greater in uterine lesions created by laser vaporization compared with those set with the loop electrode at power densities comparable to those usually achieved at hysteroscopic surgery. The results suggest that an electrosurgical loop designed for operative hysteroscopy may be profitable for an effective transendosopic fertility surgery, in particular for the resection of endometrium cysts with a minimal thermal injury and a short period of reconvalescence. Return to index of Abstracts | About the VWHA |