ABC | Volume 111, Nº1, July 2018

Image Pestana et al Challenging evaluation of quadricuspid aortic valve regurgitation Arq Bras Cardiol. 2018; 111(1):115-116 Figure 1 – Aortic regurgitation jet visualized by transthoracic echocardiogram with color Doppler (A) and its respective spectrum on continuous Doppler wave (B); large jet visualized by transesophageal echocardiogram, with a 6 mm vena contracta (C), originating from the central coaptation defect of the quadricuspid aortic valve, with a regurgitant orifice of 0.35 cm 2 in three-dimensional planimetry (D); Almost circumferential thickening of the left ventricular outflow tract readily identified in the three-dimensional image in systole (E), confirming the presence of a subaortic membrane with evaluation of orthogonal planes (F). This is an open-access article distributed under the terms of the Creative Commons Attribution License 1. Zacharaki AA, Patrianakos AP, Parthenakis FI, Vardas PE. Quadricuspid aortic valve associated with non-obstructive sub-aortic membrane: a case report and review of the literature. Hellenic J Cardiol. 2009;50(6):544-7. Reference 116