Doppler echocardiogram in a patient with cardiac tamponade. Note the inspiratory increase of tricuspid flow velocities (A) and the expiratory increase of mitral (B) and aortic (C) flow velocities.
ECG: electrocardiogram.
Reproduced from: Hoit BD. Imaging the pericardium. Cardiol Clin 1990; 8:587. Illustration used with the permission of Elsevier Inc. All rights reserved.
