ISSN 2398-2977      

Ovary: colpotomy

pequis

Introduction

  • Ovaries are removed from mares for two reasons - pathologic changes or management practices.
  • A number of different approaches and techniques are available to the surgeon.
  • Ovariectomy is associated with a higher frequency of peri-operative complications than other elective surgical procedures.

Uses

Advantages

  • Treatment of choice for removal of ovarian neoplasia.
  • Standing sedation can be used for ovariectomy via colpotomy.
  • Excellent cosmetic results.

Disadvantages

  • Poor visualization of surgical site.
  • High frequency of peri-operative complications - some of which can be life-threatening.
  • Technically difficult to exteriorize ovary and ligate it.

Requirements

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Preparation

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Procedure

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Aftercare

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Outcomes

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Prognosis

  • Depends upon primary reason for surgery.
  • Guarded for behavioral reasons - although normal oestrus cycles are prevented, this may not alleviate the abnormal behavior.
  • Guarded for ovarian granulosa theca cell tumors Ovary: neoplasia - granulosa / theca cell.
  • Unilateral resection: mares return to estrus in mean of 8.5 months (usually must go through winter anestrus before they start to cycle again on the remaining ovary).
  • Once the normal cycle has started, fertility appears to be unaffected.

Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Prado T & Schumacher J (2019) How to perform ovariectomy thorough a colpotomy. Equine Vet Educ 31 (4), 209-213 WileyOnline.
  • Loesch D A & Rodgerson D H (2003) Surgical approaches to ovariectomy in mares. Comp Cont Educ Pract Vet 25 (11), 862-871 VetMedResource.
  • Hooper R N, Taylor T S, Varner D D & Blanchard T L (1993) Effects of bilateral ovariectomy via colpotomy in 23 mares (1984-1990). J Am Vet Med Assoc 203 (7), 1043-1046 PubMed.
  • Drost M, Savio J D, Barros C M, Badinga L & Thatcher W W (1992) Ovariectomy by colpotomy in cows. JAVMA 200 (3), 337-339 PubMed.
  • Nickels F A (1988) Complications of castration and ovariectomy. Vet Clin North Am Equine Pract (3), 515-523 PubMed.
  • Sloane D E Jr (1988) Ovariectomy, ovariohysterectomy, and cesarean section in mares. Vet Clin North Am Equine Pract (3), 451-159 PubMed.

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