在我国慢性肺原性心脏病(简称肺心病)主要是慢性支气管炎、阻塞性肺气肿衍变发展来的。肺心病如已出现心力衰竭、诊断即不困难。在出现心力衰竭之前,由于呼吸系统症状与循环系统症状交错出现,较难判断是否已出现心脏病,因此早期诊断比较困难。肺心病的诊断主要是根据病史、临床 Chronic pulmonary heart disease in our country (referred to as pulmonary heart disease) is mainly chronic bronchitis, obstructive emphysema derived from the development. Pulmonary heart disease such as heart failure has occurred, the diagnosis is not difficult. Prior to heart failure, early diagnosis is more difficult because of the staggering appearance of respiratory and circulatory symptoms and the difficulty of determining whether a heart attack has occurred. Pulmonary heart disease diagnosis is based mainly on history, clinical