A narrow QRS complex Tachycardia with an apparently concentric retrograde atrial activation sequence.
The retrograde atrial activation sequence constitutes an initial important clue to elucidate the tachycardia mechanism during diagnostic electrophysiological testing in patients with supraventricular tachycardia. However, in some cases its correct analysis is challenging.
Arias
Miguel A
MA
Cardiac Arrhythmia and Electrophysiology Unit. Department of Cardiology. Hospital Virgen de la Salud. Toledo. Spain. maapalomares@secardiologia.es
Castellanos
Eduardo
E
Puchol
Alberto
A
Pachon
Marta
M