Spontaneous Resolution of Left Ventricular Outflow Tract Obstruction in the Course of Newly-Developed Mitral Valve Prolapse in a Hypertrophic Cardiomyopathy Patient
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概要
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A 63-year-old man was diagnosed with hypertrophic obstructive cardiomyopathy. Echocardiography revealed asymmetrical left ventricular hypertrophy, systolic anterior movement (SAM) of mitral leaflets causing an outflow tract pressure gradient of 52 mmHg, and moderate mitral regurgitation (MR) directed posteriorly in the left atrium.Four years later,when the patient was admitted for mild congestive heart failure, SAM and left ventricular outflow obstruction were absent, and prolapse of the posterior mitral leaflet was causing anteriorly-directed severe MR. Rupture of the chordae tendineae was responsible for the mitral prolapse and for the abolition of the outflow obstruction. Shinshu Med J 59 : 259 ―263, 2011
- 2011-08-10
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