AV reentrant tachycardia: Difference between revisions
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==Pathophysiology== | ==Pathophysiology== | ||
Electrical activity of the heart is rerouted through an accessory pathway that connects the atria with the ventricles. | Electrical activity of the heart is rerouted through an accessory pathway that connects the atria with the ventricles. | ||
Antegrade conduction is the progression of electrical activity from the atria to the ventricals through an accessory pathway. This leads to a | ==Classification== | ||
Two types of tachycardias fall under this category: | |||
Antegrade Reentrant Tachycardia is caused when the electrical activity progresses from the atria to the ventrical through the accessory pathway and reenters the atria through the [[HIS Bundle]]. This circular progression continues and overrides the normal conduction system. | ===Antegrade Reentrant Tachycardia=== | ||
Antegrade conduction is the progression of electrical activity from the atria to the ventricals through an accessory pathway. This leads to a premature activation of the ventrical and shows on [[ECG]] as a delta wave during [[sinus rhythm]]. Antegrade Reentrant Tachycardia is caused when the electrical activity progresses from the atria to the ventrical through the accessory pathway and reenters the atria through the [[HIS Bundle]]. This circular progression continues and overrides the normal conduction system. | |||
===Retrograde Reentrant Tachycardia=== | |||
Retrograde Reentrant Tachycardia is the reverse circuit. The electrical activity progresses normally from the atria down the HIS bundle, but reenters the atria through the accessory pathway. This circular progression continues and overrides the normal conduction system. | Retrograde Reentrant Tachycardia is the reverse circuit. The electrical activity progresses normally from the atria down the HIS bundle, but reenters the atria through the accessory pathway. This circular progression continues and overrides the normal conduction system. | ||
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{{#ev:youtube|coS_Oky4lPk}} | {{#ev:youtube|coS_Oky4lPk}} | ||
== | ==References== | ||
{{Reflist|2}} | |||
==See Also== | |||
[[Wolff-Parkinson-White syndrome]] | [[Wolff-Parkinson-White syndrome]] | ||
[[Lown-Ganong-Levine syndrome]] | |||
[[Category:Cardiology]] | |||
[[Category:Electrophysiology]] | |||
{{WikiDoc Help Menu}} | {{WikiDoc Help Menu}} | ||
{{WikiDoc Sources}} | {{WikiDoc Sources}} | ||
Revision as of 19:52, 5 September 2012
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-In-Chief: Varun Kumar, M.B.B.S. [2]
Pathophysiology
Electrical activity of the heart is rerouted through an accessory pathway that connects the atria with the ventricles.
Classification
Two types of tachycardias fall under this category:
Antegrade Reentrant Tachycardia
Antegrade conduction is the progression of electrical activity from the atria to the ventricals through an accessory pathway. This leads to a premature activation of the ventrical and shows on ECG as a delta wave during sinus rhythm. Antegrade Reentrant Tachycardia is caused when the electrical activity progresses from the atria to the ventrical through the accessory pathway and reenters the atria through the HIS Bundle. This circular progression continues and overrides the normal conduction system.
Retrograde Reentrant Tachycardia
Retrograde Reentrant Tachycardia is the reverse circuit. The electrical activity progresses normally from the atria down the HIS bundle, but reenters the atria through the accessory pathway. This circular progression continues and overrides the normal conduction system.
Video
Below is a video explaining the mechanism of AV re-entrant tachycardia
{{#ev:youtube|coS_Oky4lPk}}