Electrocardiographic J Wave: Early Repolarization, Brugada Wave and Conduction Delay

J wave is a deflection between the QRS and ST segment of which polarity is commonly in the same major direction of the QRS complex. J wave may stand as a distinct delta wave following the QRS, or be partially buried inside of the QRS as QRS notching or slurring.1-3 Since J wave occurs at the junction that marks completion of ventricular depolarization and beginning of ventricular repolarization, it can be part of either conduction delay or early repolarization. In other words, J wave is simply an ECG definition that does not clearly tell us whether it belongs to ventricular depolarization or repolarization.
Source: Heart Rhythm - Category: Cardiology Authors: Source Type: research