pseudotruncus arteriosus

[ sōō′dō-trŭngkəs är-tîr′ē-ōsəs ]


A congenital cardiovascular deformity characterized by atresia of the pulmonic valve and the lack of a main pulmonary artery with the lungs being supplied with blood either through an arterial duct or via bronchial arteries arising from the aorta.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.