Riggs T, Hirschfeld S, Borkat G, Knoke J, Liebman J
Circulation. 1978 May;57(5):939-47. doi: 10.1161/01.cir.57.5.939.
Echocardiography was used to measure right ventricular systolic time intervals (RVSTI) in 85 normal children (group I) and in 229 patients undergoing cardiac catheterization (group II). Corrected right ventricular pre-ejection period (RPEPC) and right ventricular ejection time (RVETc) (based on regression analysis of group I) and RPEP/RVET were each correlated with pulmonary artery (PA) diastolic and mean pressures and pulmonary vascular resistance (PVR). The best correlation (0.83) was between a second degree polynomial of the RPEP/RVET and PA diastolic pressure. The RPEP/RVET allowed prediction of PA diastolic pressure within 10 mm Hg in 85% of the patients. The utility of RPEP/RVET was confirmed in sequential data of 22 patients, in whom alteration in RPEP/RVET accurately reflected the changing PA diastolic pressure. The RPEP/RVET could not be used to assess PA pressure in six patients with congestive cardiomyopathy nor in 18 patients with complete right bundle branch block (CRBBB).
超声心动图用于测量85名正常儿童（I组）和229名接受心导管检查的患者（II组）的右心室收缩时间间期（RVSTI）。校正后的右心室射血前期（RPEPC）和右心室射血时间（RVETc）（基于I组的回归分析）以及RPEP/RVET分别与肺动脉（PA）舒张压、平均压和肺血管阻力（PVR）相关。RPEP/RVET的二次多项式与PA舒张压之间的相关性最佳（0.83）。RPEP/RVET能够在85%的患者中预测PA舒张压，误差在10 mmHg以内。在22例患者的连续数据中证实了RPEP/RVET的实用性，其中RPEP/RVET的变化准确反映了PA舒张压的变化。RPEP/RVET不能用于评估6例充血性心肌病患者和18例完全性右束支传导阻滞（CRBBB）患者的PA压力。
