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{{Accelerated idioventricular rhythm}}
{{Accelerated idioventricular rhythm}}
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{{CMG}}; '''Associate Editor-In-Chief:''' {{CZ}}
{{CMG}}


'''Associate Editor-In-Chief:''' {{CZ}}
{{SK}} AIVR; accelerated isorhythmic ventricular rhythm


==[[Accelerated idioventricular rhythm overview|Overview]]==
==[[Accelerated idioventricular rhythm overview|Overview]]==


The incidence of Accelerated Idioventricular Rhythms following acute MI is reported to be between 8 and 36%. This rhythm can also be seen in patients with primary myocardial disease, hypertensive, rheumatic, and congenital heart disease. Digoxin may cause of accelerated idioventricular rhythm.
==[[Accelerated idioventricular rhythm definition|Definition]]==


==EKG characteristics==
==[[Accelerated idioventricular rhythm historical perspective|Historical Perspective]]==
:* Regular rhythm at a rate of 40 to 100-120 BPM.
:* QRS complexes are abnormal and wide.
:* The ventricular complexes are usually but not necessarily dissociated from the P waves.
:* Ventricular capture and fusion beats are common.


== Differential Diagnosis ==
==[[Accelerated idioventricular rhythm causes|Causes]]==
# Because of its slower rate it may resemble [[NSR]]. Look for numerous fusion beats. The term accelerated isorhythmic ventricular rhythm has been suggested. <br>
# Must be distinguished from junctional tachycardia with preexisting IVCDs. But in these patients there are no fusion or capture beats. <br>


== Clinical Correlation ==
==[[Accelerated idioventricular rhythm differential diagnosis|Differentiating Accelerated idioventricular rhythm from other Diseases]]==
# Seen in both AMIs and IMIs.
# Commonly seen following reperfusion.
# Usually occurs during [[sinus bradycardia]].
# May also be caused by digitalis.


AIVR appears similar to [[ventricular tachycardia]] but is benign and doesn't need any treatment.
==[[Accelerated idioventricular rhythm epidemiology and demographics|Epidemiology and Demographics]]==


==References==
==Diagnosis==


#Hammill S. C. Electrocardiographic diagnoses: Criteria and definitions of abnormalities, Chapter 18, MAYO Clinic, Concise Textbook of Cardiology, 3rd edition, 2007 ISBN 0-8493-9057-5
[[Accelerated idioventricular rhythm electrocardiogram|Electrocardiogram]]
#Engelen DJ, Gressin V, Krucoff MW, Theuns DA, Green C, Cheriex EC, Maison-Blanche P, Dassen WR, Wellens HJ, and Gorgels AP. Usefulness of frequent arrhythmias after epicardial recanalization in anterior wall acute myocardial infarction as a marker of cellular injury leading to poor recovery of left ventricular function. Am J Cardiol 2003 Nov 15; 92(10) 1143-9. PMID 14609586.
#Ilia R, Zahger D, Cafri C, Abu-Ful A, Weinstein JM, Yaroslavtsev S, Gilutz H, and Amit G. Predicting survival with reperfusion arrhythmias during primary percutaneous coronary intervention for acute myocardial infarction. Isr Med Assoc J 2007 Jan; 9(1) 21-3. PMID 17274350
#http://www.emedicine.com/med/topic12.htm
#Hampton, John (1997). The ECG Made Easy.


==Additional resources==
==Treatment==
* [http://en.ecgpedia.org ECGpedia: Course for interpretation of ECG]
* [http://www.anaesthetist.com/icu/organs/heart/ecg/ The whole ECG - A basic ECG primer]
* [http://www.ecglibrary.com 12-lead ECG library]
* [http://www.ecgsim.org Simulation tool to demonstrate and study the relation between the electric activity of the heart and the ECG]
* [http://heartcenter.seattlechildrens.org/what_to_expect/electrocardiogram.asp ECG information from Children's Hospital Heart Center, Seattle]
* [http://0-www.nhlbi.nih.gov.innopac.up.ac.za:80/health/dci/Diseases/ekg/ekg_what.html National Heart, Lung, and Blood Institute, Diseases and Conditions Index]
* [http://www.ecglibrary.com/ecghist.html A history of electrocardiography]
* [http://www.health.gov.mt/impaedcard/issue/issue1/ipc00103.htm EKG Interpretations in infants and children]
 
==Examples==
 
<div align="left">
<gallery heights="175" widths="175">
Image:aivr1.jpg|An example of accelerated idioventricular rhythm (AIVR)
Image:aivr2.jpg|AIVR. Inverted P waves are sign of retrograde atrial activation.
</gallery>
</div>


[[Accelerated idioventricular rhythm medical therapy|Medical Therapy]]


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{{Electrocardiography}}
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Latest revision as of 19:06, 14 March 2016

Accelerated idioventricular rhythm
12 lead EKG shows a slow and wide complexes with intermittent narrow complex beats. The 5th and 10th beats are sinus node originated complexes (sinus rhythm) and close examination of these beats will give a clue to understand the cause of the wide complex rhythm. ST elevation indicates an acute myocardial infarction. The wide complex beats represent accelerated idioventricular rhythm which is usually seen following reperfusion in acute MI
MeSH D016170

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor-In-Chief: Cafer Zorkun, M.D., Ph.D. [2]

Synonyms and keywords: AIVR; accelerated isorhythmic ventricular rhythm

Overview

Definition

Historical Perspective

Causes

Differentiating Accelerated idioventricular rhythm from other Diseases

Epidemiology and Demographics

Diagnosis

Electrocardiogram

Treatment

Medical Therapy


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