Prevalence and Risk Factors for Cardiac Diseases in a Hospital-Based Population of 3,434 Horses (1994–2011)
Article first published online: 20 SEP 2013
Copyright © 2013 by the American College of Veterinary Internal Medicine
Journal of Veterinary Internal Medicine
Volume 27, Issue 6, pages 1563–1570, November/December 2013
How to Cite
Leroux, A.A., Detilleux, J., Sandersen, C.F., Borde, L., Houben, R.M.A.C., Al Haidar, A., Art, T. and Amory, H. (2013), Prevalence and Risk Factors for Cardiac Diseases in a Hospital-Based Population of 3,434 Horses (1994–2011). Journal of Veterinary Internal Medicine, 27: 1563–1570. doi: 10.1111/jvim.12197
- Issue published online: 13 NOV 2013
- Article first published online: 20 SEP 2013
- Manuscript Accepted: 13 AUG 2013
- Manuscript Revised: 18 JUL 2013
- Manuscript Received: 19 NOV 2012
- French Community of Belgium
- Cardiac arrhythmia;
Risk factors for cardiac diseases in horses have not been explored in a large population of animals.
To describe risk factors for various cardiac diseases in a hospital-based population of horses.
Files of 3,434 horses admitted at the Internal Medicine Department of the Liege Equine Teaching Hospital between 1994 and 2011 were reviewed and of those, 284 were categorized as having moderate-to-severe cardiac disease.
Observational study. After calculating prevalence for each cardiac disease, we tested whether breed (chi-square test) or sex, age, body weight (BW), and other cardiac diseases (logistic regressions) were risk factors (p < .05 significant).
Mitral regurgitation (MR, 4.4%), atrial fibrillation (AF, 2.3%), aortic regurgitation (AR, 2.1%), and tricuspid regurgitation (TR, 1.7%) were the most common cardiac abnormalities detected. Determinants were male sex and increasing age for AR (OR = 2.03, CI = 1.07–4.94), racehorses breed and middle-age for TR (OR = 4.36; CI = 1.10–17.24), and high BW for AF (OR = 3.54; CI = 1.67–7.49). MR was the most common valvular disease associated with AF, clinically important ventricular arrhythmia, pulmonary regurgitation (PR), and congestive heart failure (CHF). TR was also associated with AF, PR, and CHF; AR was not associated with CHF.
Conclusions and Clinical Importance
Several previously suspected risk factors for a variety of equine cardiac diseases are statistically confirmed and other risk factors are highlighted in the studied hospital-based population. These observations should be taken into account in health and sport's monitoring of horses presenting predisposing factors.