AV nodal reentrant tachycardia: Difference between revisions

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__NOTOC__
{{Infobox_Disease |
{{Infobox_Disease |
   Name          = {{PAGENAME}} |
   Name          = {{PAGENAME}} |
   Image          = AV nodal reentrant tachycardia.png |
   Image          = AV nodal reentrant tachycardia.png |
   Caption        = AV nodal reentrant tachycardia. In yellow, is evidenced the P wave that falls after the QRS complex.|
   Caption        = AV nodal reentrant tachycardia, uncommon variant with antegrade conduction down the slow pathway. In yellow, is evidenced the P wave that falls after the QRS complex.|
   DiseasesDB    = |
   DiseasesDB    = |
   ICD10          = {{ICD10|I|47|1|i|30}} |
   ICD10          = {{ICD10|I|47|1|i|30}} |
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}}
}}
{{AVNRT}}
{{AVNRT}}
{{CMG}}
{{CMG}} : {{AE}} {{RG}}


{{SK}} AVNRT; AV node reentrant tachycardia; AV nodal reentry tachycardia; AV node reentry tachycardia; atrioventricular node reentrant tachycardia; atrioventricular nodal reentry tachycardia; atrioventricular node reentry tachycardia;
{{SK}} AVNRT; AV node reentrant tachycardia; AV nodal reentry tachycardia; AV node reentry tachycardia; atrioventricular node reentrant tachycardia; atrioventricular nodal reentry tachycardia; atrioventricular node reentry tachycardia; junctional reciprocating tachycardia;  reciprocal or reciprocating AV nodal reentrant tachycardia


==[[AVNRT overview|Overview]]==
==[[AVNRT overview|Overview]]==


==[[AVNRT historical perspective|Historical Perspective]]==
==[[AVNRT historical perspective|Historical Perspective]]==
==[[AVNRT classification|Classification]]==


==[[AVNRT pathophysiology|Pathophysiology]]==
==[[AVNRT pathophysiology|Pathophysiology]]==


==[[AVNRT classification|Classification]]==
==[[AVNRT causes|Causes]]==
 
==[[AVNRT risk factors|Risk Factors]]==


==[[AVNRT differential diagnosis|Differentiating AVNRT from other Disorders]]==
==[[AVNRT differential diagnosis|Differentiating AVNRT from other Disorders]]==
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==[[AVNRT epidemiology and demographics|Epidemiology and Demographics]]==
==[[AVNRT epidemiology and demographics|Epidemiology and Demographics]]==


==[[AVNRT natural history, complications and prognosis|Natural History, Complications, Prognosis]]==
==[[AVNRT risk factors|Risk Factors]]==
 
==[[AVNRT natural history, complications and prognosis|Natural History, Complications and Prognosis]]==


==Diagnosis==
==Diagnosis==
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==Treatment==
==Treatment==
[[AVNRT treatment overview|Overview]] | [[AVNRT patient position|Patient position]] | [[AVNRT medical therapy|Medical Therapy]]
[[AVNRT treatment overview|Overview]] | [[AVNRT patient position|Patient Position]] | [[AVNRT vagal maneuvers|Vagal Maneuvers]] | [[AVNRT medical therapy|Medical Therapy]] | [[AVNRT cardioversion|Cardioversion]] | [[AVNRT electrophysiologic testing and radiofrequency ablation|Electrophysiologic Testing and Radiofrequency Ablation]] | [[AVNRT prevention|Prevention]]
 
===Patient Position===
Place the patient in a supine position to improve cerebral perfusion and reduce the odds of [[syncope]].  Placing the patient in [[Trendelenburg position]] may actually terminate the rhythm.
 
===Vagal maneuvers===
Some people with known AVNRT may be able to stop their attack by using various tricks to activate the [[vagus nerve]]. This includes [[carotid sinus massage]] (pressure on the [[carotid sinus]] in the neck), submersion of the face in ice water to trigger the [[diving reflex]], putting the patient in [[Trendelenburg position]] or the [[Valsalva maneuver]] (increasing the pressure in the chest by attempting to exhale against a closed airway).  [[Vagel maneuvers]] are contraindicated in the presence of [[hypotension]].
 
===Cardioversion===
In very rare instances, [[cardioversion]] (the electrical restoration of a normal heart rhythm) is needed in the treatment of AVNRT. This would normally only happen if all other treatments have been ineffective, or if the fast heart rate is poorly tolerated (e.g. the development of [[heart failure]] symptoms, [[hypotension]] ([[low blood pressure]]) or [[unconsciousness]]).
 
===Electrophysiology and Radiofrequency Ablation===
After being diagnosed with AVNRT, patients can also undergo an electrophysiology (EP) study to confirm the diagnosis. [[Catheter ablation]] of the slow pathway, if successfully carried out, and cures 95% of patients with AVNRT. The risk of complications is quite low.
 
===Prevention===
Triggers such as [[alcohol]] and caffeine should be avoided.
 
==References==
{{Reflist|2}}
 
==See also==
*[[AV Reentrant tachycardia]]
*[[Supraventricular tachycardia]]
*[[Cardiac electrophysiology]]
*[[Clinical cardiac electrophysiology]]


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[[Category:Electrophysiology]]
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[[Category:Arrhythmia]]
[[Category:Emergency medicine]]
[[Category:Emergency medicine]]
[[Category:Intensive care medicine]]
[[Category:Intensive care medicine]]

Latest revision as of 14:37, 8 April 2020

AV nodal reentrant tachycardia
AV nodal reentrant tachycardia, uncommon variant with antegrade conduction down the slow pathway. In yellow, is evidenced the P wave that falls after the QRS complex.
ICD-10 I47.1
ICD-9 426.89, 427.0
MeSH D013611

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] : Associate Editor(s)-in-Chief: Ramyar Ghandriz MD[2]

Synonyms and keywords: AVNRT; AV node reentrant tachycardia; AV nodal reentry tachycardia; AV node reentry tachycardia; atrioventricular node reentrant tachycardia; atrioventricular nodal reentry tachycardia; atrioventricular node reentry tachycardia; junctional reciprocating tachycardia; reciprocal or reciprocating AV nodal reentrant tachycardia

Overview

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Differentiating AVNRT from other Disorders

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