Absence of the Solid Part of the Right Ventricular Musculature

Abstract

This article deals with the presentation of a 47-year-old male patient with total absence of the solid wall of the right ventricle but not of the trabeculae carneae or of the papillary muscles. The previous history included attacks of paroxysmal tachycardia and, furthermore, angina of effort during the last three years. The terminal events were dominated by several types of arrhythmias. The autopic findings revealed no degenerative or inflammatory changes of the myocardium. The coronary arteries were normal except for non-contributory minimal atheromatous deposits. Absence of the solid part of the right ventricular musculature probably represents a congenital defect. A . R., Adaro, F. V . M., Roncoroni, A. J.: Idiopathic myocardiopathy resulting in failure of contractility of the right ventricle. Am. J. Med. 48: 235-238, 1970. Viola,de Vries, P. A . & de C. M . Saunders, I. B.: Development of the ventricles and spiral outflow tract in the human heart. Contribs. Embryol. 37: 87-114, 1962.