The A-dip of diastolic mitral regurgitation: An unusual Doppler flow pattern in a patient with severe aortic insufficiency and complete heart block
Department of Cardiology Echocardiography Laboratory, New York University Medical Center, 560 First Avenue, New York, NY 10016, USA
Received 28 July 2006; accepted after revision 29 August 2006; online publish-ahead-of-print 7 November 2006.
* Corresponding Author. Tel: +1 212 263 5665; fax: +1 212 263 8461. E-mail address: itzhak.kronzon{at}med.nyu.edu
| Abstract |
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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.
Keywords: Diastolic mitral regurgitation; Aortic insufficiency; Atrioventricular conduction block
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