Influence of right ventricular apical pacing on left ventricular vortices with vector flow mapping
血流向量成像技术评价右心室心尖起搏对左心室流场分布的影响

Objective To evaluate the dynamic changes of intraventricular vortices in the patients with sick sinus syndrome(SSS) having right ventricular apical pacing with vector flow mapping (VFM). Methods Fourteen patients with SSS were implanted with dual chamber pacemaker and thirty healthy subjects were assessed by conventional echocardiography. The vortex distribution in the left ventricle was obtained by VFM with the software of DAS-RS1. Series of vortex parameters were compared between the pacing group and the...