肺心病是继发性心脏病,其病变的要害是肺动脉高压以及引起肺动脉高压的肺部疾患,心肌本身是正常的,只是由于小循环压力增高引起继发性改变。因此,理解肺动脉高压的发展过程就能明了肺心病及其病理生理,也就进而能正确预防和治疗肺心病。 Pulmonary heart disease is a secondary heart disease, the key to its disease is pulmonary hypertension and pulmonary disease caused by pulmonary hypertension, the myocardium itself is normal, only due to small changes in circulation caused by secondary pressure changes. Therefore, the understanding of the development of pulmonary hypertension will be able to understand the pulmonary heart disease and its pathophysiology, which in turn can correctly prevent and treat pulmonary heart disease.