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目的；应用99mTc－RBC作平衡法核素心室造影测定肺心病患者左右心室功能。方法：47例住院肺心病患者分代偿期组22例，失代偿期组11例，肺心病并冠心病组14例。设正常组12例对照。结果：肺心病代偿期组心功能基本正常。失代偿期组左右心室功能均减退，但以右室为明显：RVEF34．78％±4．85％、LVEF57．82％±8．27％、高峰充盈率（PFR）2．44±0．56dc／s、心室舒张前1／3充盈率（1／3FR）1．45±0．75edc／s。肺心病并冠心病组RVET37．18％±8．13％，左室功能继续下降（LVEF48.25％±11．99％、PFR1．85±0．66edc／S、1／3FR1．14±0．89edc／s）。肺心病代偿期组相角程（PSH）已开始升高，且随病情加重而递增。结论：肺心病失代偿期是以右心受损为主，左心受累为次的全心性疾病。肺心病合并冠心病时左室功能减退较单纯肺心病明显。肺心病代偿期左右心室功能基本正常，但心肌收缩协调性及顺应性已有变化．
Objective To determine the left and right ventricular function in patients with cor pulmonale by 99mTc-RBC equilibrium method. Methods: Forty-seven patients with cor pulmonale were divided into compensatory group (n = 22), decompensated group (n = 11), cor pulmonale combined with coronary heart disease (n = 14). Set the normal control group of 12 cases. Results: Coronary heart disease compensatory heart function was normal. Right ventricular function was reduced in the decompensated group, but right ventricle was obvious: RVEF was 34.78% ± 4.85%, LVEF was 57.82% ± 8.27% and peak filling rate was (PFR) 2.44 ± 0. 56dc / s, the first 1/3 of the ventricular diastolic filling rate (1 / 3FR) 1.45 ± 0.75edc / s. RVET and coronary heart disease group RVET37.18% ± 8.13%, left ventricular function continued to decline (LVEF48.25% ± 11.99%, PFR1.85 ± 0.66edc / S, 1 / 3FR1.14 ± 0. 89edc / s). Pulmonary heart disease compensatory phase angle (PSH) has begun to rise, and increased with the exacerbations. Conclusion: The decompensated pulmonary heart disease is a heart-full disease with right heart damage and secondary left heart involvement. Pulmonary heart disease with coronary heart disease left ventricular dysfunction than simple pulmonary heart disease was significantly. Coronary heart disease compensatory phase of ventricular function was normal, but myocardial contractility and compliance have changed.