Figure 2. Comparison of echocardiogram. (A) Preoperative echocardiogram showed left ventricle dilation, basal segment of ventricular septum thinning, and regional wall swung toward the right ventricle in the systolic period (marked by arrow). Left ventricular longitudinal strain images displayed dyssynchronous left ventricle motion (left ventricle global longitudinal strain [LVGLS], 14.7%). Septal segments of the left ventricle had most abnormal strain values. (B) There was a recovery trend of paradoxical movement in ventricular septum after catheter ablation (marked by arrow). Left ventricular systolic function improved slightly (LVGLS, 15.8%). (C) The structure and synchrony of ventricular septum improved significantly 6 months after catheter ablation (marked by arrow; LVGLS, 19.7%).