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Updated: Jun 27, 2025

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Published on: December 22, 2023
Challenging wide QRS tachycardia diagnosis: One trigger two mechanisms
Oğuzhan Ekrem Turan1, Barış Akdemir2, Reşit Yiğit Yilancioğlu1
1Dokuz Eylul University, Faculty of Medicine, Heart Rhythm Management Center, 35220, Izmir, Turkey.
Abstract:
The coexistence of different types of wide QRS complex tachycardias induced by the same trigger has rarely been observed. The electrical instability and incessant nature of tachycardias can cause tachycardiomyopathy and will not allow accurate diagnosis during an electrophysiological study (EPS). In case of an electrical storm, elimination of the trigger may be the first approach to provide patient stability. We report a successfully managed case of repetitive initiation of pleomorphic ventricular tachycardia and Mahaim-type antidromic atrioventricular reentrant tachycardia, induced by a premature ventricular complex in the right ventricular outflow tract.
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