The frequency distribution of cardiovascular disease are changing recently due to the development of living environment. Unfortunately there are few epidemiological studies of cardiovascular diseases in general population, we tried to estimate the recent trend of cardiovascular diseases studying hospitalized patients in nationwide 13 large hospitals during a year of 1985. The hypertensive disea...

T1HE recent emphasis on early surgical intervention for patients with chronic rheumatic valvular disease has made the need for basic data concerning the natural history of this conditioii of practical importance. Data regarding the natural morbidity of patients with chronic rheumatic heart disease in the third, fourth, and fifth decades of life are presented. This information should prove usefu...