Wide complex tachycardia natural history, complications and prognosis

Wide complex tachycardia due to ventricular tachycardia can cause life-threatening or fatal hemodynamic compromise or it can degenerate into a life-threatening rhythm called ventricular fibrillation. In general, supraventricular tachycardia with aberrancy is generally better tolerated and is not necessarily a medical emergency. An exception is if the the wide complex tachycardia is due to atrial fibrillation conducting down a bypass track such as is seen in Wolff-Parkinson-White syndrome (WPW) in which case the rhythm can degenerate into life-threatening ventricular fibrillation.

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