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A third-degree rectovaginal tear in a primiparous mare
Joshua Trumble, Fred Caldwell, Aime...
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A 10 year old Quarter Horse mare was presented for rectovaginal tear and fistula. She had foaled unattended. The large foal was found dead but appeared grossly normal. A tear was present from the mare’s vulva through her perineal body and extended cranially 6 inches. The mare was medically managed with flunixin meglumine and femycin and hydrotherapy to reduce irritation from fecal contamination. The owner was advised to keep her on a soft stool diet and to continue hydrotherapy for 6 weeks prior to surgical reconstruction. Two months after the initial visit, the mare was reevaluated for surgical correction of the rectovaginal tear. On rectal palpation, a 5 x 5 inch fistula was noted and the rectal sphincter was intact. Fecal contamination of the vagina was present. Surgical correction for this case was performed in 2 phases. In the first phase, the rectal sphincter was split and the fistula was converted to a grade 3 rectovaginal tear. In phase 2, the perineal body and anal sphincter were repaired. Due to the degree of fibrosis from the severity of her injury, additional foaling was not recommended. Third-degree rectovaginal tears occur predominantly in primiparous animals, with the mare being over represented, due to the explosive nature of their parturition. 1 Third-degree rectovaginal tears are a complete communication between the vestibule and the rectum. Correction is important to either restore breeding function or to provide a better cosmetic appearance.
Reference
1.Climent F, Ribera T, Argüelles D, et al: Modified technique for the repair of third-degree rectovaginal lacerations in mares. Vet Rec 2009;164:393-396.
This manuscript was originally published in the journal Clinical Theriogenology Vol 12(3) Sept 2020. Clinical Theriogenology is the official journal of the Society for Theriogenology (SFT) and the American College of Theriogenologists (ACT). This content has been reproduced on the IVIS website with the explicit permission of the SFT/ACT.
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About
Affiliation of the authors at the time of publication
College of Veterinary Medicine, Auburn University, Auburn, AL
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