AN ATTEMPT TO CORRELATE THE MITRAL VALVE ECHOGRAM WITH THE HEMODYNAMICS OF PATIENTS WITH PURE MITRAL INSUFFICIENCY

概要

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Echocardiographic, hemodynamic and angiocardiographic studies in 11 patients with pure mitral insufficiency were carried out with special reference to the correlation of the amplitude of motion of the anterior mitral valve with total stroke volume, regurgitant volume, regurgitant percent and ejection fraction respectively, and of the descent rate of the anterior mitral valve with total stroke volume, mean mitral valvular flow during diastole and Ry/v respectively. The characteristic findings of mitral valve echogram in mitral insufficiency were the increase in amplitude father than the increase in the descent rate of the anterior mitral valve. On the basis of echocardiographic findings patients with mitral insufficiency were classified into three groups. The increase in amplitude may be assumed due to the increase in total stroke volume, but no correlation was found between total stroke volume and amplitude, while positive correlation between amplitude and ejection fraction was found. Positive correlation between the descent rate of the mitral valve echogram and Ry/v was found. From these results it is suggested that one of the factors affecting the descent rate is elasticity of left atrium and that one of the factors affecting amplitude is total stroke volume corrected for left ventricular end-diastolic volume (ejection fraction).
社団法人日本循環器学会の論文
1973-07-20