Demonstration of the discrepancy between AT‐wave morphology on 12‐lead ECG and AT mechanism in scar‐related AT

Abstract

AbstractThe 12‐lead electrocardiogram (ECG) is a fundamental modality to help determine the mechanism and the localization of atrial tachycardias (ATs). Although macroreentrant ATs and focal ATs typically show F‐waves and discrete P‐waves respectively on the 12‐lead ECG, this is not universally the case in scar‐related ATs.1, We present three cases clearly showing the discrepancy between the AT morphology on the 12‐lead ECG and the AT‐mechanism.