We present the case of a 77-year-old man with ischemic heart disease and baseline right bundle branch block having a well-tolerated and regular wide complex tachycardia with right bundle branch block morphology. A wide complex tachycardia (WCT) could be of supraventricular or ventricular origin. In this setting, we discuss the differential diagnosis of WCT, the usefulness and limitations of the diagnostic criteria for ventricular tachycardia.
Keywords: Atrial flutter; Implantable cardioverter defibrillator; Ischemic cardiomyopathy; Narrow ventricular tachycardia; Supraventricular tachycardia; Wide complex tachycardia.
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