Wide complex tachycardia causes: Difference between revisions
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===Supraventricular Tachycardia=== | ===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: | * [[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 | :* Antegrade conduction down an accessory bypass tract | ||
:* [[Atrial flutter]] with 2:1 conduction and occasional 1:1 conduction | :* [[Atrial flutter]] with 2:1 conduction and occasional 1:1 conduction | ||
:* Automatic [[junctional tachycardia]] | :* Automatic [[junctional tachycardia]] | ||
Revision as of 14:41, 8 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 or 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