LAT Mapping and Entrainment
During geometry and electroanatomic map acquisition, the
window-of-interest (WOI), 0 to 10ms shorter than the tachycardia cycle
length (TCL), was set in all patients, however, LAT map was not shown on
the map before ablation. The entrainment maneuvers (EM) were performed
to diagnose AT if initial ablation failed to terminate AT or if AT
diagnosis remained uncertain based on the ripple map.