肺性脑病(以下简称肺脑)是指由慢性肺胸疾患伴呼吸功能不全,出现缺氧和二氧化碳潴留而引起的一系列神经精神症状和体征的临床综合征,是慢性呼衰的主要并发症,病死率高。肺脑除具有慢性呼衰的一般临床表现外,尚伴不同程度的神经精神症状与体征。1.神经精神症状分三型:(1)抑制型。早期表现淡漠、记忆力减退、头痛头 Pulmonary encephalopathy (hereinafter referred to as pulmonary brain) refers to the clinical syndrome caused by a series of neuropsychiatric symptoms and signs caused by chronic pulmonary-chest disease with respiratory insufficiency, hypoxia and carbon dioxide retention, and is a major complication of chronic respiratory failure , High mortality. In addition to the general clinical manifestations of chronic respiratory failure, pulmonary brain accompanied by varying degrees of neuropsychiatric symptoms and signs. 1. Neuropsychiatric symptoms divided into three types: (1) inhibitory type. Indifference early performance, memory loss, headache