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报告９７例慢性阻塞性肺疾病（ＣＯＰＤ）及慢性肺心病（ＣＣＰ）患者与右心导管对照评价肺阻抗血流图（ＩＰＲ）预测肺动脉平均压（ｍＰＡＰ）的意义。分析ＩＰＲ各单项参数与ｍＰＡＰ的相关性，提示ＩＰＲ主要参数Ｐ＿２－Ｙ间期，Ｂ－Ｙ间期及Ｑ－Ｂ／Ｂ－Ｙ与ｍＰＡＰ呈中度相关。建立ＩＰＲ预测ｍＰＡＰ多元回归方程式，ｒ＝０．７７４。结果提示ＩＰＲ可作为临床近似预测ＣＯＰＤ及ＣＣＰ患者ｍＰＡＰ的简便方法，但尚不能取代右心导管作出精确诊断。
Reported 97 patients with chronic obstructive pulmonary disease (COPD) and chronic pulmonary heart disease (CCP) and right heart catheterization control evaluation of pulmonary impedance blood flow diagram (IPR) prediction of pulmonary artery mean pressure (mPAP) significance. The correlation between the individual parameters of IPR and mPAP was analyzed, suggesting that the main parameters of IPR such as P_2-Y interval, B-Y interval and Q-B / B-Y were moderately correlated with mPAP. The multivariate regression equation of IPR prediction mPAP was established, r = 0.774. The results suggest that IPR can be used as a convenient method for clinical prediction of mPAP in patients with COPD and CCP, but it can not replace the accurate diagnosis of right heart catheterization.