The 'A-dip' of diastolic mitral regurgitation: an unusual Doppler flow pattern in a patient with severe aortic insufficiency and complete heart block.
This is an unusual case of diastolic mitral regurgitation (MR) with a high diastolic velocity jet and prolonged jet duration related to a combination of acute severe aortic insufficiency and high-degree atrioventricular block. This case illustrates an interesting hemodynamic phenomenon with multiple transient decreases in the pressure gradient between the left ventricle and left atrium during diastole related to a temporary increase in left atrial pressure associated with atrial contraction.
Berger
Rachel Levine
RL
Department of Cardiology Echocardiography Laboratory, New York University Medical Center, 560 First Avenue, New York, NY 10016, USA.
Katz
Edward
E
Tunick
Paul
P
Kronzon
Itzhak
I
D000328:Adult; D001022:Aortic Valve Insufficiency / Q000150:complications*; D003971:Diastole; D015150:Echocardiography, Doppler; D006327:Heart Block / Q000150:complications*; D006801:Humans; D008297:Male; D008944:Mitral Valve Insufficiency / Q000000981:diagnostic imaging* / Q000209:etiology / Q000503:physiopathology*