Vol 16, No 3 (2009)
Images in Cardiology
Published online: 2009-03-10

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A-dip of the aortic valve by M-mode echocardiography

Ioannis Stathopoulos, Themistoklis Nissirios, Robert Ostfeld, Garet Gordon, Daniel Spevack
Cardiol J 2009;16(3):273-275.

Abstract

We present a case with the previously unreported finding of an a-dip in the M-mode tracing of the aortic valve. An a-dip is commonly seen in the M-mode tracing of the pulmonic valve motion, and represents near equalization of pulmonary artery and right ventricular end- -diastolic pressures during atrial contraction. M-mode echocardiography has become an ancillary study to the basic two-dimensional examination, but can often convey important features of cardiac hemodynamics quite elegantly, as the present case demonstrates.

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