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  • Title: Left paralumbar fossa approach combined with mesocolon fenestration for bilateral equine ovariectomy.
    Author: Devick IF, Hendrickson DA.
    Journal: Vet Surg; 2019 Jul; 48(5):735-741. PubMed ID: 30663073.
    Abstract:
    OBJECTIVE: To describe a standing left paralumbar fossa approach combined with mesocolon fenestration for bilateral equine ovariectomy. STUDY DESIGN: Prospective experimental clinical study. ANIMALS: Four healthy client-owned mares and 1 client-owned Molly mule. METHODS: Mares were restrained in standing stocks and sedated with an α2 -agonist continuous infusion to effect. The abdominal cavity was approached via a left paralumbar fossa approach, and the contralateral right ovary was accessed through an incision in the mesocolon. The location of the window was adjusted to allow triangulation, adequate visualization, and manipulation of the contralateral right ovary. Each ovarian pedicle was ligated with extracorporeal ligatures prior to sharp transection. The ovaries were dropped and left within the abdomen as part of another study. The incision in the mesocolon was closed with laparoscopic staples. Mares were monitored hourly while hospitalized, and a questionnaire was completed by the owners 90 days after surgery. RESULTS: Both ovarian pedicles were successfully ligated and transected in all mares through the left paralumbar fossa approach and mesocolon fenestration. The only complications consisted of mild incisional emphysema in 2 of 5 equids, with all resolving spontaneously. All equids returned to intended use at 90 days. CONCLUSION: The left paralumbar fossa approach combined with mesocolon fenestration provided adequate access to both ovaries with minimal morbidity in this small population. CLINICAL SIGNIFICANCE: A unilateral left paralumbar fossa approach and fenestration of the mesocolon should be considered as an alternative to traditional approaches for bilateral laparoscopic ovariectomies in equids.
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