Repolarization time in presence of intraventricular conduction disturbances. A new solution for an old problem

Although the QT interval is used as a surrogate parameter of ventricular repolarization, it actually includes both process of ventricular activity: depolarization, represented in the ECG by the QRS complex, and repolarization, represented by the ST segment and T wave [1]. For this reason, not only a slowing (prolongation) of the repolarization may be able to prolong the QT interval, but also a widening of the QRS complex is able to increase that value without representing any repolarization anomaly.

Source: Journal of Electrocardiology - March 2, 2018 Category: Cardiology Authors: Manlio F. M árquez Source Type: research