慢性肺原性心脏病,多由于慢性支气管炎,慢性肺部疾患反复感染,引起了支气管周围炎,小叶性肺炎。使肺血管壁增厚,管腔狭窄,毛细血管床减少,肺循环阻力增高,继而产生肺动脉高压、心衰。另外支气管腔内反复感染,造成了管腔不全阻塞,形成肺气肿,加重肺动脉高压。严重时出现低氧血症和高碳酸血症,由此可见感染在肺心病发病机制中是起主导作用的,因此控制感染,是治疗肺心病的主要环节。文献报道,肺心病在成年人中患病率达0.48%,病死率近年来虽有下降,但仍然很高。肺心病 Chronic pulmonary heart disease, mostly due to chronic bronchitis, chronic lung disease repeated infections, causing bronchial inflammation, lobular pneumonia. Thickening of the pulmonary vascular wall, stenosis, capillary bed reduction, increased resistance to pulmonary circulation, resulting in pulmonary hypertension, heart failure. In addition bronchial cavity repeated infections, resulting in incomplete lumen obstruction, the formation of emphysema, increased pulmonary hypertension. Severe hypoxemia and hypercapnia, which shows that infection plays a leading role in the pathogenesis of pulmonary heart disease, and therefore control of infection, is the main part of the treatment of pulmonary heart disease. Reported in the literature, the prevalence of pulmonary heart disease in adults reached 0.48%, although the mortality rate in recent years declined, but still high. Pulmonary heart disease