Collar EM, Duesterdieck-Zellmer KF, Huber MJ, Semevolos SA, Parker JE, Husby KA. Outcome of bilateral equid laparoscopic ovariectomies.
Vet Surg 2021;
50:975-983. [PMID:
33931888 DOI:
10.1111/vsu.13651]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 04/10/2021] [Accepted: 04/17/2021] [Indexed: 11/29/2022]
Abstract
OBJECTIVE
To assess outcomes and behavior changes associated with bilateral laparoscopic ovariectomies.
STUDY DESIGN
Retrospective study.
SAMPLE POPULATION
Fifty-one equids.
METHODS
Medical records were evaluated from equid bilateral laparoscopic ovariectomies from January 2012 to October 2018 with a potential of 6 months follow-up. Follow-up information obtained by telephone interviews included behavior before and after surgery. Likelihood ratio chi-square tests and odds ratios (OR) with 95% CI were calculated where applicable, with statistical significance at p < .05.
RESULTS
Bilateral ovariectomy was performed in 51 cases, with elective (no pathologic ovaries) ovariectomies performed in 41/51 cases. Occasional estrus-like behavior was observed postoperatively in 14/51 (27%) mares, but the behavior was mild and manageable in all cases. There was no age effect on outcome in all bilateral (p = .56) or elective only (p = .36) cases. In 37/41 (90%) elective cases, improvement was observed in the reason for presentation. Some response to altrenogest administration for behavior modification was observed preoperatively in 12/18 (67%) elective cases. Response to altrenogest was not associated with (p = .31) or able to predict a beneficial response to surgery (OR = 5.5; 95% CI = 0.38-78.57; p = .21).
CONCLUSION
Response to altrenogest in elective cases may not predict behavioral outcome with ovariectomy. Occasional estrus-like behavior in mares postoperatively was not problematic for any owners. Bilateral ovariectomy is a viable treatment option for owners seeking to alleviate undesirable behavior in mares.
CLINICAL SIGNIFICANCE
This study should aid veterinarians and horse owners in case selection for bilateral ovariectomy.
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