Key result
Transvenous electrical cardioversion combined with amiodarone successfully restored sinus rhythm, though atrial fibrillation reoccurred early in the postoperative period.
Case Report (n=1)
Transvenous electrical cardioversion combined with amiodarone in a horse achieved temporary sinus rhythm but was complicated by significant hypotension and early recurrence of atrial fibrillation.
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Amiodarone may provoke hypotension in equine cardioversion; this case leaves open optimal antiarrhythmic strategies for sustained sinus rhythm.
A 664 kg, 19‐year‐old, Irish sport horse gelding with chronic atrial fibrillation presented for transvenous electrical cardioversion under general anaesthesia. Five incremental electrical shocks were delivered in combination with intraoperative pharmacological cardioversion using amiodarone, which caused significant arterial hypotension treated with dobutamine infusion. Final successful cardioversion to sinus rhythm was achieved, and the horse recovered smoothly from general anaesthesia. Unfortunately, atrial fibrillation reoccurred early in the postoperative period.
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Asorey et al. (2022) conducted a case report in Chronic atrial fibrillation (n=1). Transvenous electrical cardioversion in combination with amiodarone was evaluated on Cardioversion to sinus rhythm. Transvenous electrical cardioversion combined with amiodarone successfully restored sinus rhythm, though atrial fibrillation reoccurred early in the postoperative period.
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