Repair of urinary bladder rupture through a urethrotomy and urethral sphincterotomy in four postpartum mares.

Objective: To report the clinical findings, surgical technique, and outcome after repair of urinary bladder rupture through a urethral incision in postpartum mares.

Study Design: Retrospective study.

Animals: Four Thoroughbred broodmares.

Methods: Medical records were reviewed for clinical signs, surgical technique, medical therapy, and outcome. The bladder was everted into the vagina through a urethral incision that included a sphincterotomy. The bladder defect was repaired with absorbable suture material in a single-layer, full thickness, simple, continuous pattern. The urethral incision was closed similarly.

Results: Depression, inappetence, signs of shock, dehydration, azotemia, and serum electrolyte abnormalities were consistent findings that increased temporally after bladder rupture. Each bladder defect was repaired successfully, and metabolic derangements were corrected with supportive medical therapy. All mares survived, conceived, and had more foals without further complications

Conclusion And Clinical Relevance: Bladder rupture associated with parturition in mares can be repaired in a standing position by eversion of the bladder through a urethrotomy and urethral sphincterotomy.