Wide complex tachycardia causes: Difference between revisions
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==Overview== | ==Overview== | ||
A wide complex tachycardia is either of ventricular origin ([[ventricular tachycardia]] or [[VT]]), or is of supraventricular origin with aberrant conduction ([[SVT]] with aberrancy) such as occurs with conduction down a [[bypass tract]]. | A wide complex tachycardia is either of ventricular origin ([[ventricular tachycardia]] or [[VT]]), or is of supraventricular origin with aberrant conduction ([[SVT]] with aberrancy) such as occurs with conduction down a [[bypass tract]]. Approximately 80% of wide complex tachycardias are due to [[ventricular tachycardia]].<ref name="pmid16951728">{{cite journal |author=Lam P, Saba S |title=Approach to the evaluation and management of wide complex tachycardias |journal=[[Indian Pacing and Electrophysiology Journal]] |volume=2 |issue=4 |pages=120–6 |year=2002 |pmid=16951728 |pmc=1557420 |doi= |url=http://www.ipej.org/2/120 |issn= |accessdate=2013-08-04}}</ref> | ||
==Ventricular Tachycardia== | ==Ventricular Tachycardia== | ||
Revision as of 22:27, 4 August 2013
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]
Overview
A wide complex tachycardia is either of ventricular origin (ventricular tachycardia or VT), or is of supraventricular origin with aberrant conduction (SVT with aberrancy) such as occurs with conduction down a bypass tract. Approximately 80% of wide complex tachycardias are due to ventricular tachycardia.[1]
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
References
- ↑ Lam P, Saba S (2002). "Approach to the evaluation and management of wide complex tachycardias". Indian Pacing and Electrophysiology Journal. 2 (4): 120–6. PMC 1557420. PMID 16951728. Retrieved 2013-08-04.