Equilibrium radionuclide angiography(ERNA) phase image analysis was performed after operation. Ventricular activation sequence and biventricular contraction synchrony during RVS and RVA pacing were compared with those of the intrinsic rhythm.

• 术后进行核素心室显像位相分析 ,对比自身心律与RVA和RVS起搏时心室激动顺序和双心室同步性的差异。