慢性肺心病(以下称肺心病)急性加重期除具有代偿期的临床表现外,主要是原发病症状加重病情恶化和心肺功能失代偿,但有的表现以呼吸衰竭为主,或以心力衰竭为主,或两者并存,因而是威胁生命的急症,需紧急治疗。根据大量住院病例的分析,80％～85％的肺心病急性发作是由于呼吸道感染所诱发,其次是气道痉挛、肺栓塞、气胸、镇静剂及麻醉止痛剂的使用不当、长时间高浓度吸氧、完全非肠道营养(如大量高渗糖的输入)、左心衰等原因所引起。肺心病急性加重期呼衰的诊 Chronic pulmonary heart disease (hereinafter referred to as pulmonary heart disease) acute exacerbation in addition to compensatory clinical manifestations, the main symptoms of the disease is aggravated exacerbations and cardiopulmonary decompensation, but some manifestations of respiratory failure or Heart failure, or both, is therefore a life-threatening emergency requiring emergency treatment. According to the analysis of a large number of inpatients, 80% to 85% of acute episodes of pulmonary heart disease are induced by respiratory infections, followed by improper use of airway spasm, pulmonary embolism, pneumothorax, sedatives and narcotic analgesics. Long-term high concentration of oxygen , Completely non-intestinal nutrition (such as a large number of hypertonic sugar input), left heart failure and other causes. Diagnosis and treatment of respiratory failure in acute exacerbation of pulmonary heart disease