Pulmonary Hypertension in Mitral Valvular Disease

　The recent practice of right and left heart　catheterization has led to the study of the cir—culatory dynamics of systemic and pulmonary　circulation in acquired heart diseases.　This　study is useful for pathophysiological inter—pretation for basic medicine workers, as well　as diagnosis for physicians and operative indi—cation for surgeons.　As part of the present　series of study a report has previously been　made of the circulatory dynamics in acquired　valvular diseases.^1）　This report gives stress　to the mechanism of pulmonary hypertension　in mitral valvular diseases.