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Sustained monomorphic ventricular tachycardia in patients with a prior myocardial infarction: Treatment and prognosis

Leonard I Ganz, MD, FHRS, FACC
Alfred Buxton, MD
Section Editor
Peter J Zimetbaum, MD
Deputy Editor
Brian C Downey, MD, FACC


Sustained monomorphic ventricular tachycardia (SMVT) is defined by the following characteristics:

A regular wide QRS complex (≥120 milliseconds) tachycardia at a rate greater than 100 beats per minute

The consecutive beats have a uniform and stable QRS morphology

The arrhythmia lasts ≥30 seconds or causes hemodynamic collapse in <30 seconds

In patients with significant coronary heart disease (CHD) or other structural heart disease, a wide QRS complex tachycardia should be considered to be ventricular tachycardia until proven otherwise [1]. (See "Approach to the diagnosis of wide QRS complex tachycardias".)

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Literature review current through: Nov 2017. | This topic last updated: Aug 09, 2017.
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