慢性肺心病呼吸衰竭时出现神经、精神症状多与呼吸性酸中毒有关即所谓肺性脑病,但有时与严重酸硷失衡,电解质紊乱有关,如呼酸伴代硷或呼硷时,或严重低钠时,亦可出现神志改变。另外感染因素等皆可影响神经系统而出现精神症状。国外Szám等曾报告,肺心病失代偿时或伴有脑病时常 Chronic pulmonary heart disease respiratory failure occurs when the nerves, mental symptoms and respiratory acidosis related to the so-called pulmonary encephalopathy, but sometimes with severe acid-base imbalance, electrolyte imbalance, such as Huachen with alkaloids or alkaloids, or severe low Sodium can also appear when the mind changes. In addition, infection and other factors can affect the nervous system and mental symptoms. Foreign Szám et al have reported that pulmonary heart disease decompensated or associated with encephalopathy often