肺性脑病(肺脑)是慢性肺胸疾病(尤其慢性肺心病)呼吸衰竭过程中最常见、最严重的一种合并症。仅慢性肺心病而言,合并肺脑占20%-25%,而肺脑病死率为30%-50%,如此每4-5例慢性肺心病即发生1例肺脑,每2-3例肺脑即有1人死亡。当前,如何更有效地防治肺脑,使其发生率和病死率降低,仍是临床界一项重要任务和研究课题。 Pulmonary encephalopathy (pulmonary brain) is the most common and serious complication of respiratory failure in chronic pulmonary disease (especially chronic pulmonary heart disease). Only chronic pulmonary heart disease, the merger of pulmonary brain 20% -25%, and pulmonary encephalopathy mortality was 30% -50%, so that every 4-5 cases of chronic pulmonary heart disease that occurs in 1 case of pulmonary brain, every 2-3 cases One person died of pulmonary brain disease. At present, how to prevent and treat lung and brain more effectively and reduce their incidence and mortality is still an important task and research topic in the clinical field.