Myocardial Fibrosis and Ventricular Tachyarrhythmia in a Thoroughbred Filly

A 16-month old Thoroughbred filly was evaluated for lethargy, tachycardia, tachypnea and signs suggestive of colic. Rapid ventricular tachycardia with a heart rate of 210 beats/min was identified on initial physical examination. Multiple doses of lidocaine transiently restored sinus rhythm. Echocardiography revealed several foci of variably increased echogenicity within the left ventricular myocardium, including an area of marked transmural hyperechogenicity and endocardial depression suspected to be chronic scar tissue of the left ventricular free wall.
Source: Journal of Equine Veterinary Science - Category: Veterinary Research Authors: Tags: Case Report Source Type: research