Hypertrophic cardiomyopathy and tachyarrhythmias detected by a pacemaker

• Published in: Arquivos brasileiros de cardiologia Vol. 92; no. 3; pp. e13 - e15
• Main Authors: Baranchuk, Adrian, Divakaramenon, Syamkumar, Ribas, Sebastian, Morillo, Carlos A
• Format: Journal Article
• Language: English; Spanish
• Published: Brazil 01-03-2009
• Subjects: Cardiac Pacing, Artificial; Cardiomyopathy, Hypertrophic - therapy; Electrocardiography - instrumentation; Electrodes, Implanted; Humans; Male; Middle Aged; Syncope - diagnosis; Tachycardia - diagnosis
• ISSN: 1678-4170

A 56-year-old man came to the Pacemaker Clinic for his regular pacemaker control. He had experienced a syncopal episode in the previous week. He had a previous diagnosis of non-obstructive hypertrophic cardiomyopathy. Due to a previous syncope and documented 2:1 infrahisian block, a dual-chamber permanent pacemaker had been implanted a few years before. The device was interrogated, showing several ventricular high rate episodes. A careful analysis of the stored intracardiac electrograms showed ventricular tachycardia (VT) with 2:1 ventriculoatrial conduction. The following presentation discusses the alternative diagnosis and clinical management in an unusual diagnosis of VT in the presence of non-obstructive hypertrophic cardiomyopathy.