Uroperitoneum in a preparturient mare

Abstract

A 12-year pregnant Thoroughbred mare at ~ 340 days of pregnancy was presented for evaluation of lethargy, anorexia, and colic
signs. Reproductive examination was unremarkable; however, uroperitoneum was diagnosed via transabdominal ultrasonography,
serum biochemistry, and peritoneal fluid analysis. Mare was medically stabilized for 24 hours. To promote fetal maturation, 80
mg dexamethasone was given prior to Caesarean section and exploratory celiotomy. A ventral urinary bladder wall rupture and
multiple descending colon mesenteric rents were identified and repaired. Foal was delivered alive, treated for neonatal maladjustment
syndrome, and discharged after 14 days. Seven days after surgery, severe complications of the mare led to its abrupt decline
in health and sudden death.