Case Report Double-outlet right ventricle with an intact interventricular septum and concurrent hypoplastic left ventricle in a calf * D.K. Newhard, DVM , S.W. Jung, DVM, MS, PhD*, R.L. Winter, DVM , T. Kuca, DVM , J. Bayne, DVM , T. Passler, DVM, PhD Department of Clinical Sciences, College of Veterinary Medicine, Auburn University, Auburn, AL, USA Received 20 April 2016; received in revised form 18 November 2016; accepted 29 November 2016 KEYWORDS Bovine; Congenital heart de- fect; Persistent hypoxia Abstract A 3-day-old Hereford heifer calf presented for evaluation of lethargy and dyspnea, with persistent hypoxia despite supplemental oxygen therapy. A grade III/VI right apical systolic murmur was noted during cardiac auscultation. Echocardiography revealed a double-outlet right ventricle with an intact interven- tricular septum and concurrent hypoplastic left ventricle and tricuspid valve dys- plasia. Post-mortem examination revealed additional congenital anomalies of ductus arteriosus, patent foramen ovale, and persistent left cranial vena cava. This report illustrates the use of echocardiographic images to diagnose a double-outlet right ventricle with an intact interventricular septum and a hypoplastic left ventri- cle in a calf. ª 2016 Elsevier B.V. All rights reserved. * A unique aspect of the Journal of Veterinary Cardiology is the emphasis of additional web-based images permitting the detailing of procedures and diagnostics. These images can be viewed (by those readers with subscription access) by going to http://www. sciencedirect.com/science/journal/17602734. The issue to be viewed is clicked and the available PDF and image downloading is available via the Summary Plus link. The supplementary material for a given article appears at the end of the page. Downloading the videos may take several minutes. Readers will require at least Quicktime 7 (available free at http://www.apple.com/quicktime/ download/) to enjoy the content. Another means to view the material is to go to http://www.doi.org and enter the doi number unique to this paper which is indicated at the end of the manuscript. * Corresponding author. E-mail address: szj0026@auburn.edu (S.W. Jung). http://dx.doi.org/10.1016/j.jvc.2016.11.002 1760-2734/ª 2016 Elsevier B.V. All rights reserved. Journal of Veterinary Cardiology (2017) 19, 205e210 www.elsevier.com/locate/jvc