Ventricular tachycardia is defined as an arrhythmia which originates from the ventricles consisting of at least three or more consecutive beats at a rate of greater than 100/min and independent of AV or atrial conduction. If this terminates spontaneously within less than 30 s it is defined as non-sustained. If it lasts greater than 30 s or requires treatment for termination it is defined as sustained. Most commonly VT is associated with structural heart disease such as scar related re-entry in patients who have had a prior MI. Occasionally it may be associated with a structurally normal heart and is termed idiopathic. This is most commonly seen in the right ventricular outflow tract, coronary cusps, coronary veins or around the valve annuli.
CITATION STYLE
Hayase, J., Glover, B. M., Brugada, P., & Bradfield, J. S. (2021). Ventricular tachycardia. In Clinical Handbook of Cardiac Electrophysiology (pp. 183–206). Springer International Publishing. https://doi.org/10.1007/978-3-030-74319-2_9
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