Moukarbel, George V; Shah, A M; Tinnemore, Amanda; Mora, Samia
description
A patient with first-degree atrioventricular (AV) block and pulmonary regurgitation underwent a transthoracic echocardiogram. Continuous wave Doppler interrogation of the pulmonic valve displayed a biphasic regurgitation pattern. A discussion of the potential mechanism underlying this pattern is presented.
