慢性肺心病是一种常见病,多发病,严重危害劳动人民健康。它在心脏病中的发病率为5—35％之间,仅次于风湿性心脏病,占第二位。死亡率较高,一般在30％左右。因此积极防治肺心病对保护劳动人民健康,支援社会主义建设具有重要意义。在毛主席 Chronic pulmonary heart disease is a common disease, frequently-occurring disease, seriously endangering the health of working people. It is the incidence of heart disease in the 5-35%, second only to rheumatic heart disease, accounting for second place. Mortality is higher, generally around 30%. Therefore, active prevention and treatment of pulmonary heart disease is of great significance for protecting the health of working people and supporting socialist construction. In Chairman Mao