Morphology of Far‐Field Electrograms and Antitachycardia Pacing Effectiveness Among Fast Ventricular Tachycardias Occurring in ICD Patients: A Multicenter Study

Fast ventricular tachycardias (FVT) are less likely to be terminated by antitachycardia pacing (ATP). No information is available regarding the ability of far-field electrogram (Ff-EG) morphology (Ff-EGm) in predicting the result of the subsequent ATP. Our objective is to determine the relationship between Ff-EGm and ATP efficacy.In this multicenter study we analyzed 289 FVT (cycle length [CL]: 250-320 milliseconds) occurring consecutively in 52...