2016 ACVIM Forum Research Abstract Program

In conclusion, competing eventing horses showed higher sympathetic tone and lower post-exercise cortisol than controls. NIBP, splenic volume and resting or post-exercise hematocrit did not detect changes in autonomic tone in this population. The studied markers of autonomic tone did not change significantly throughout the season in any group and did not detect changes in competing endurance horses compared to controls. Pituitary pars intermedia dysfunction (PPID) and Equine Metabolic Syndrome (EMS) have been described as the most common endocrinologic disorders in horses. Few large studies exist that describe the epidemiological characteristics of horses with these endocrine diseases. The purpose of this study was to obtain information that included age, breed, sex, clinical signs, and ACTH/insulin/glucose status at initial diagnosis of potential endocrine cases (new cases) to determine the epidemiological characteristics of horses with hyperinsulinemia.