Implantable Cardioverter-Defibrillator Discharge in a Patient with Dilated Cardiomyopathy

The response to antitachycardia pacing can sometimes reveal clues about tachycardia mechanisms. This article discusses a case in which the diagnosis of typical atrioventricular nodal reciprocating tachycardia could be firmly established from the implantable cardioverter-defibrillator interrogation alone.