Wide complex tachycardia causes: Difference between revisions
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[[Category:Cardiology]] | [[Category:Cardiology]] |
Revision as of 21:31, 7 February 2013
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Causes
A wide complex tachycardia (WCT) can be due to either:
Ventricular Tachycardia
- Ventricular tachycardia (VT) (80% of cases, 98% of cases if coronary heart disease or structural heart disease are present)
Supraventricular Tachycardia
- Supraventricular tachycardia (SVT) with aberrant ventricular conduction, which is either new or due to a preexisting left or right bundle branch block or a preexisting nonspecific intraventricular conduction delay (IVCD). The underlying supraventricular rhythm that is aberrantly conducted can be any one of the following rhythms:
- Antegrade conduction down an accessory bypass tract
- Atrial flutter with 2:1 conduction and occasional 1:1 conduction
- Automatic junctional tachycardia
- AV nodal reentrant tachycardia
- AV reentrant tachycardia using a bypass tract
- Intraatrial reentrant tachycardia
- Paroxysmal atrial tachycardia
- SA nodal reentrant tachycardia
- Sinus tachycardia