P-wave morphology and electrical activity of the isolated left atrial appendage on 12-lead ECG in patients with recurrent atrial tachyarrhythmias after pulmonary vein isolation

摘要

Left atrial appendage isolation(LAAI) may occur during catheter ablation of complex atrial tachyarrhythmias(aTa). We compare P-waves before and after LAAI and characterize LAA activity on the 12-lead ECG after LAAI.