In double inlet left ventricle only the left lower heart chamber (left ventricle) is developed, and both upper chambers carry blood into this ventricle. A small, poorly developed right ventricle may be present. Double inlet left ventricle is one of several heart defects known as single (or common) ventricle defects, as there is essentially only one pumping chamber in the heart.
Review Date 5/6/2016
Updated by: Scott I. Aydin, MD, Assistant Professor of Pediatrics, Albert Einstein College of Medicine, Division of Pediatric Cardiology and Critical Care Medicine, The Children's Hospital at Montefiore, Bronx, NY. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.