Vol 65, No 5 (2007)
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Published online: 2007-06-01

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Invasive electrophysiology
Wide QRS complex tachycardia in a patient after inferior myocardial infarction and CABG – the role of electrophysiological study and RF ablation

Michał Orczykowski, Paweł Derejko, Robert Bodalski, Ewa Szufladowicz, Joanna Zakrzewska, Piotr Urbanek, Roman Kępski, Andrzej Przybylski, Łukasz Szumowski, Franciszek Walczak
DOI: 10.33963/v.kp.80924
Kardiol Pol 2007;65(5):603-607.

Abstract

We present a case of 53-year-old patient who experienced paroxysms of wide QRS complex tachycardia at a rate of 150 bpm and LBBB morphology 6 years after inferior myocardial infarction and CABG. Anamnesis and morphology of tachycardia could suggest ventricular tachycardia. However during electrophysiological study we observed AVRT with LBBB and “regularly irregular” AVRT with normal QRS complex and changing entrance to the AV node (through slow and fast pathway). In this paper we present our approach and try to explain why the tachycardia using concealed bypass tract appeared so late in life.

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Polish Heart Journal (Kardiologia Polska)