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通过对肺心病病人血气分析结果进行比较，探讨了慢性肺心病动脉血气，酸碱失衡与肺脑发生的关系。PCO_2＞10．67kPa，肺脑发生率80％，pH＜7．20时，发生率71．43％，而PCO_2＞10．67kPa，pH＜7．20时，肺脑发生率100％。酸碱失衡中呼酸并代酸和呼酸明显高于其它类。肺心病病人并发肺脑者，肺脑发生前与一般肺心病人动脉血气参数比较，PCO_2差异有极显著意义（P＜0．05）。肺脑发生后与一般肺心病人血气参数比较，PCO_2、AB差异有极显著意义（P＜0．01），pH、PCO_2差异有显著意义（P＜0．05）。同一病例肺脑发生前后比较，pH、PCO_2差异有极显著意义（P＜0．01）。
By comparing the blood gas analysis results of patients with cor pulmonale, the relationship between arterial blood gas, acid-base imbalance and pulmonary encephalopathy in chronic pulmonary heart disease was discussed. PCO_2> 10.67kPa, the incidence of pulmonary brain 80%, the incidence of 71.43% when pH <7.20, while the PCO_2> 10.67kPa, pH <7.20, the incidence of pulmonary brain 100%. Acid-base imbalance in acid and acid and acid were significantly higher than other types. Pulmonary heart disease patients with pulmonary brain disease, before pulmonary artery and pulmonary heart disease compared with arterial blood gas parameters, PCO_2 difference was extremely significant (P <0.05). Compared with the blood gas parameters of patients with pulmonary heart disease, the differences of PCO_2 and AB were significant (P <0.01) and the differences of pH and PCO_2 were significant (P <0.05). The same case before and after the occurrence of lung and brain, pH, PCO_2 difference was extremely significant (P <0.01).