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对70例急性加重期肺心病及13例肺性脑病患者同时作动静脉血气分析,并与60例慢性支气管炎和29例正常人对比,结果发现:(1)肺心病急性加重期动静脉氧分压差(△PO_2)显著低于慢支炎及正常人,而以肺性脑病时最低(P<0.01～0.001);(2)肺心病急性加重期动静脉血pH值差(△pH)显著低于正常人,肺性脑病时尤显著(P<0.01),而动、静脉血〔HCO_3~ˉ〕和BE差值无显著性(P>0.05);(3)影响△PO_2的因素有PaO_2和PaCO_2;影响△pH的主要因素为△PO_2。
70 cases of acute exacerbation of pulmonary heart disease and 13 cases of pulmonary encephalopathy patients with arterial and venous blood gas analysis, and with 60 cases of chronic bronchitis and 29 normal subjects, the results showed that: (1) pulmonary heart disease acute exacerbation of arterial and venous oxygen (P <0.01 ~ 0.001); (2) pH value of arteriovenous blood in acute exacerbation of pulmonary heart disease (△ pH) was lower than that of chronic bronchitis and normal subjects (P <0.01), while there was no significant difference between HCO3 and BE in arterial and venous blood (P> 0.05). (3) The factors affecting △ PO_2 were PaO_2 and PaCO_2; the main factor affecting △ pH is △ PO_2.