The Diagnosis and Management of Atrial Fibrillation in the Horse

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The Dove Press journal Veterinary Medicine: Research and Reports, has made available the full text of the article “The diagnosis and management of atrial fibrillation in the horse.” This article was first published in February 2015.

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Atrial fibrillation is the most common performance-limiting arrhythmia in the horse. Detailed cardiovascular evaluation will help guide prognosis and treatment. Many affected horses have lone atrial fibrillation (no predisposing cardiac abnormalities). These horses have a good prognosis for return to performance if sinus rhythm can be restored. The main therapeutic option continues to be quinidine, which has been used for over 60 years. Transvenous electrical cardioversion has proven to be a successful alternative. Other therapeutic options are being explored, but are currently limited.


M. Kimberly J. McGurrin of the Health Sciences Centre, Ontario Veterinary College, University of Guelph, Guelph, Ontario, Canada.