RT Book, Section A1 Kreutzer, Jacqueline A2 Rudolph, Colin D. A2 Rudolph, Abraham M. A2 Lister, George E. A2 First, Lewis R. A2 Gershon, Anne A. SR Print(0) ID 7049540 T1 Chapter 498. The Patient with Single Ventricle T2 Rudolph's Pediatrics, 22e YR 2011 FD 2011 PB The McGraw-Hill Companies PP New York, NY SN 978-0-07-149723-7 LK accesspediatrics.mhmedical.com/content.aspx?aid=7049540 RD 2024/03/28 AB Single ventricle or univentricular heart refers to a limited number of congenital heart lesions from a strict anatomic perspective. Anatomically, single ventricle lesions can be either a single left ventricle, due to agenesis of the right ventricular inlet (there is often a small component of the right ventricular outlet present), or a single right ventricle, secondary to agenesis of the left ventricle.1,2 In both, the atria drain through one or two atrioventricular valves into the only ventricular chamber (Fig. 498-1). These lesions are rare, and do not include common lesions such as tricuspid atresia and hypoplastic left-heart syndrome.