Survey of 79 referral colic cases.

The clinical, surgical and/or necropsy diagnosis of 79 horses admitted to a referral clinic for evaluation of colic are reported. Twenty-one horses were presented with conditions amenable to medical treatment and all were subsequently discharged. Exploratory laparotomies were performed on 44 horses during the present study, in some cases as a diagnostic procedure preceding euthanasia. In general, in surgical cases the mortality rate was highest for problems involving the small intestine, followed by those affecting the large colon and then the small colon. Postoperative sequelae included peritonitis, infarction, visceral rupture and acute circulatory failure. Colitis, visceral rupture and thromboembolic infarction generally had a fatal result. The overall recovery rate (for 79 horses) was about 50 per cent.