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Angiology
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Diastolic Mitral Regurgitation in Patients With Hypertrophic Cardiomyopathy

Nasiruddin Jamal

Department of Medicine, Baylor College of Medicine, and the VA Hospital, Houston, Texas

Albert E. Raizner

Department of Medicine, Baylor College of Medicine, and the VA Hospital, Houston, Texas

Tetsuo Ishimori

Department of Medicine, Baylor College of Medicine, and the VA Hospital, Houston, Texas

Robert A. Chahine

Department of Medicine, Baylor College of Medicine, and the VA Hospital, Houston, Texas

An analysis of the left ventricular angiograms of 31 patients with hyper trophic cardiomyopathy revealed diastolic mitral regurgitation in 4, a preva lence of 12.9%. The clinical, echocardiographic, angiographic, and hemo dynamic data of these patients were reviewed. Diastolic mitral regurgitation could not be attributed to arrhythmia, PR interval prolongation, atrioventricu lar dissociation, aortic insufficiency, or aortic stenosis. Reduced left ventricular compliance was evidenced by elevated end-diastolic pressure following angiog raphy and reduced diastolic E-F slope on echocardiography. It is speculated that the rapid inflow of blood into a poorly compliant ventricle established a turbulent flow pattern that resulted in the "floating" of blood back into the left atrium.

Angiology, Vol. 29, No. 10, 773-778 (1978)
DOI: 10.1177/000331977802901008
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