Quadricuspid aortic valve associated with idiopathic dilated cardiomyopathy: A case report.

A patient without any known congenital cardiac abnormalities who suffered from ventricular tachycardia was taken to the emergency room following successful resuscitation. Transthoracic echocardiography showed diffuse left ventricle dysfunction and mild aortic regurgitation. Coronary angiography demonstrated intact coronary and suspected morphological abnormalities of the aortic valve. In addition, transesophageal echocardiography revealed a rare quadricuspid aortic valve malformation. After controlling ventricular tachycardia and congestive heart failure with optimal medical therapy, the patient had an uneventful course and was subsequently discharged 3 weeks after admission. To our knowledge, this is the first report of quadricuspid aortic valve associated with idiopathic dilated cardiomyopathy. <Learning objective: A quadricuspid aortic valve is a rare congenital anomaly. A quadricuspid aortic valve is often associated with other cardiac disorders, such as patent ductus, mitral valve malformation, hypertrophic cardiomyopathy, and coronary abnormalities. However, there have been no previous case reports of a quadricuspid aortic valve occurring in association with idiopathic dilated cardiomyopathy. This is the first report of quadricuspid aortic valve associated with idiopathic dilated cardiomyopathy.>.