To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Video 4 En face view of AV valve. View Video 4 at http://movie-usa.glencoesoftware.com/video/10.1530/ERP-17-0062/video-4. EDUCATIONAL SERIES IN CONGENITAL HEART DISEASE: Echocardiographic assessment of left to right shunts: atrial septal defect, ventricular septal defect, atrioventricular septal defect, patent arterial duct Antigoni Deri, and Kate English 2018. 5:R1-R16 DOI: 10.1530/ERP-17-0062 Download Original Video