Supraventricular tachycardia with broad QRS complexes and atrioventricular dissociation — is that possible?

Abstract

We present a case of broad QRS complex tachycardia and atrioventricular (AV) dissociation that was documented duringelectrophysiological study to be a supraventricular rather than a ventricular tachycardia. Ablation of AV nodal slow pathwayeliminated the arrhythmia confirming the diagnosis of atypical AV nodal reentrant tachycardia.