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目的:研究探讨慢性阻塞性肺疾病和肺心病血气比较分析,丰富临床治疗经验.方法:选取血气分析在临床中经常应用的PH、PaCO2以及PaO2等项目的比较和差异区别研究慢性阻塞性肺疾病患者与肺心病患者间的血气变化的程度.结果:(1)将慢阻肺组和对照组对比,PaCO2(P>0.05)、PH(P>0.05),两项指标没有显著差异,PaO2(P>0.05)差异显著;(2)慢阻肺组和肺心病组对比失代偿期,PaCO2(P0.05),两项指标没有显著差异,PaCO2(P0.05), PH (P>0.05), there was no significant difference between two indicators, PaO2 significant difference (P>0.05); (2) the copd and cor pulmonale group compared with decompensated period, PaCO2 (P0.05), there was no significant difference between two indicators, PaCO2 (P<0.01) significant difference.Conclusions Blood gas analysis in chronic obstructive pulmonary diseases and cor pulmonale in clinical diagnosis and treatment and prognostic judgement and prediction has important significance.