[Correlation of pulmonary hemodynamics and electrical impedance pulmonary rheogram]

Pulmonary hemodynamic was taken in 16 patients with pulmonary hypertension (PH) and in 18 patients without pulmonary hypertension (NPH) and contrasted simultaneously with their electrical impedance rheogramm (IPR). The parameters of the pulmonary hemodynamic: PASP, PADP, PAMP, TPR, CpA had significant difference between PH and NPH, but there was no significant difference in SVI and CI between PH and NPH. The parameters in IPR: Q-B, B-Y, Q-B/B-Y, B-C, Hs, Cdz/dtmax had significant difference between PH and NPH. The correlation between the parameters in IPR and pulmonary hemodynamic were remarkable, their coefficient of correlation were 0.332-0.72. The regressional equation of PAMP was as follows: PAMP (mmHg) = 32.64-36.8Hs-110.432Q-C+31.208Q-B/B-Y. F = 15.33, S = 6.24, P less than 0.01. The clinical effect of the equation for the calculation of PAMP was satisfactory.