Sustained monomorphic ventricular tachycardia: Clinical manifestations, diagnosis, and evaluation
- Leonard I Ganz, MD, FHRS, FACC
Leonard I Ganz, MD, FHRS, FACC
- Section Editor — Cardiac Arrhythmias
- Director of Cardiac Electrophysiology
- Heritage Valley Health System
- Alfred Buxton, MD
Alfred Buxton, MD
- Professor of Medicine, Harvard Medical School
- Director, Clinical Electrophysiology Laboratory
- Beth Israel Deaconess Medical Center
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 (WCT) should be considered to be ventricular tachycardia until proven otherwise. (See "Approach to the diagnosis of wide QRS complex tachycardias".)To continue reading this article, you must log in with your personal, hospital, or group practice subscription. For more information on subscription options, click below on the option that best describes you:
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- EPIDEMIOLOGY AND RISK FACTORS
- CLINICAL MANIFESTATIONS AND ECG FINDINGS
- History and associated symptoms
- Physical examination
- DIFFERENTIAL DIAGNOSIS
- Supraventricular tachycardia
- Electrocardiogram artifact
- ADDITIONAL DIAGNOSTIC EVALUATION
- Cardiac imaging
- Continuous ECG monitoring
- Signal-averaged electrocardiogram
- Exercise testing
- Electrophysiologic studies
- INFORMATION FOR PATIENTS
- SUMMARY AND RECOMMENDATIONS