To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Video 1 Color Doppler imaging of the superior vena cava before pericardiocentesis, revealing monophasic flow during systole only. View Video 1 at http://movie-usa.glencoesoftware.com/video/10.1530/ERP-17-0025/video-1. Changes in the venous pulse waveform in pericardial effusion revealed by Doppler echocardiography of the superior vena cava Benoy N Shah, and Dhrubo J Rakhit 2017. 4:I17-I18 DOI: 10.1530/ERP-17-0025 Download Original Video