title: Doppler echocardiographic description of double-inlet left ventricle in an Arabian horse.
abstract: Univentricular atrioventricular (AV) connections are rare and complex congenital cardiac anomalies in which both AV valves communicate into a large, common (single) receiving chamber. The common chamber can be of left, right, or mixed ventricular morphology. Although well documented in people, reports of the double-inlet ventricle malformation are rare in the veterinary literature. This report provides description of an Arabian horse with a double-inlet univentricular connection of left ventricular type, a hypoplastic subpulmonary right ventricle, two muscular ventricular septal defects, and a stenotic mitral valve. Transthoracic Doppler echocardiography enabled antemortem diagnosis, and provided an assessment of intracardiac hemodynamics. The findings indicate that Doppler echocardiography is a useful, noninvasive tool for evaluating equine patients with congenital univentricular AV connections, such as a double-inlet left ventricle.
authors.affiliation: Department of Clinical Sciences, College of Veterinary Medicine and Biomedical Sciences, Colorado State University, 300 West Drake Road, Fort Collins, CO 80523, USA. cassidy.sedacca@colostate.edu
authors.forename: Cassidy D
authors.initials: CD
authors.lastname: Sedacca
authors.forename: Janice M
authors.initials: JM
authors.lastname: Bright
authors.forename: June
authors.initials: J
authors.lastname: Boon
mesh_terms: D000818:Animals; D015150:Echocardiography, Doppler / Q000662:veterinary; D018618:Echocardiography, Doppler, Color / Q000662:veterinary; D018619:Echocardiography, Doppler, Pulsed / Q000662:veterinary; D006330:Heart Defects, Congenital / Q000000981:diagnostic imaging / Q000662:veterinary*; D006345:Heart Septal Defects, Ventricular / Q000000981:diagnostic imaging / Q000662:veterinary; D006352:Heart Ventricles / Q000002:abnormalities* / Q000000981:diagnostic imaging; D006734:Horse Diseases / Q000151:congenital / Q000000981:diagnostic imaging*; D006736:Horses / Q000002:abnormalities; D008297:Male; D008943:Mitral Valve / Q000002:abnormalities