ABSTRACT
Objective:To preliminarily study the characteristics of ventricular synchronicity in patients of idiopathic pulmonary arterial hypertension (IPAH) with different heart function. Methods:Our research included in 2 groups:IPAH group, n=40 patients intermittently collected in our hospital from 2010-10 to 2014-12 and Control group, n=23 normal subjects from the same period of time. Tissue Doppler echocardiography was conducted to compare interventricular systolic and diastolic time to peak (Ts and Te), their differences (Te-Ts) and (Te-Ts) of left ventricle (LV), right ventricle (RV), interventricular septum (IVS) between 2 groups. Results:Ts and Te of RV were longer than Ts and Te of LV and IVS in both groups, PIII>IV, all differences had statistic meaning. Conclusion:IPAH patients with different right heart function may have interventricular systolic and diastolic de-synchronicity;by reduced heart function, interventricular Te-Ts could be specifically shortened.