Wide complex tachycardia causes: Difference between revisions
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A wide complex tachycardia (WCT) can be due to either: | A wide complex tachycardia (WCT) can be due to either: | ||
===Ventricular Tachycardia=== | ===Ventricular Tachycardia=== | ||
* [[Ventricular tachycardia]] ([[VT]]) | * [[Ventricular tachycardia]] ([[VT]]). Wide complex tachycardia will be due to [[VT]] in 80% of cases if there is a history of [[myocardial infarction]] ([[MI]]). Only 7% of patients with [[SVT]] with aberrancy will have had a prior [[myocardial infarction]] ([[MI]]). Wide complex tachycardia will be due to [[VT]] in 98% of cases if there's a history of [[structural heart disease]]. | ||
===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 accessory bypass tract | :* Antegrade conduction down an accessory [[bypass tract]] for instance in [[Wolff Parkinson White syndrome]] ([[WPW]]) | ||
:* [[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]] | ||
:* [[AV nodal reentrant tachycardia]] | :* [[AV nodal reentrant tachycardia]] | ||
:* [[AV reentrant tachycardia]] using a bypass tract | :* [[AV reentrant tachycardia]] using a bypass tract | ||
:* Intraatrial reentrant tachycardia | :* [[Intraatrial reentrant tachycardia]] | ||
:* [[Paroxysmal atrial tachycardia]] | :* [[Paroxysmal atrial tachycardia]] | ||
:* SA nodal reentrant tachycardia | :* [[SA nodal reentrant tachycardia]] | ||
:* [[Sinus tachycardia]] | :* [[Sinus tachycardia]] | ||
Revision as of 19:02, 3 August 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). Wide complex tachycardia will be due to VT in 80% of cases if there is a history of myocardial infarction (MI). Only 7% of patients with SVT with aberrancy will have had a prior myocardial infarction (MI). Wide complex tachycardia will be due to VT in 98% of cases if there's a history of structural heart disease.
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 for instance in Wolff Parkinson White syndrome (WPW)
- 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