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  • 1 Alfort National Veterinary School, Maisons-Alfort, France
Introduction

A 10-year-old 640-kg show jumping Selle Français mare was presented for episodes of exercise intolerance and weakness of 5 months’ duration. The mare was referred after a new arrhythmia was auscultated by the referring veterinarian.

On examination, the mare was bright and alert and had a normal body condition score (3/5). Heart rate was low (17 beats/min), and cardiac auscultation revealed a grade 3/6 left- and right-sided holosystolic murmur associated with an irregularly irregular arrhythmia. No signs of congestive heart failure such as edema or jugular distension were detected. Mucous membranes were pink and moist with a capillary refill

Contributor Notes

Corresponding author: Dr. Tanquerel (ludovic.tanquerel@vet-alfort.fr)