- 関
- accelerated idioventricular rhythm
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2012/11/16 16:38:56」(JST)
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| Accelerated idioventricular rhythm |
| Classification and external resources |
Accelerated idioventricular rhythm (AIVR) at a rate of 55/min presumably originating from the left ventricle (LV). Note the typical QRS morphology in lead V1 characteristic of ventricular ectopy from the LV. Monophasic R-wave with smooth upstroke and notching on the downstroke (i.e., the so-called taller left peak or "rabbit-ear".) |
| ICD-10 |
I45.6 |
| MeSH |
D016170 |
In accelerated idioventricular rhythm (AIVR), the rate of cardiac contraction is determined by the intrinsic rate of depolarization of the cardiac cells.
It can be present at birth.[1]
Pathophysiology
In normal hearts the sinoatrial node in the atria depolarizes at a rate of 60-100 beats per minute as an effect of the parasympathetic autonomic nervous system (otherwise the SA node would depolarize at a rate of 100 beats per minute). This suppresses the intrinsic depolarization of the other parts of the heart.
The accelerated idioventricular rhythm occurs when depolarization rate of a normally suppressed focus increases to above that of the "higher order" focuses (the sinoatrial node and the atrioventricular node). This most commonly occurs in the setting of a sinus bradycardia.[2]
Accelerated idioventricular rhythm is also the most common reperfusion arrhythmia in humans. However, ventricular tachycardia and ventricular fibrillation remain the most important causes of sudden death following spontaneous restoration of antegrade flow. [3]
Appearance
AIVR appears similar to ventricular tachycardia but is benign and doesn't need any treatment. It can most easily be distinguished from VT in that the rate is less than 120 and usually less than 100 bpm.
References
- ^ Freire G, Dubrow I (March 2008). "Accelerated idioventricular rhythm in newborns: a worrisome but benign entity with or without congenital heart disease". Pediatr Cardiol 29 (2): 457–62. doi:10.1007/s00246-007-9024-z. PMID 17687587.
- ^ "Accelerated Idioventricular Rhythm: Overview - eMedicine". http://www.emedicine.com/med/topic12.htm. Retrieved 2008-12-21.
- ^ AL Moens, MJ Claeys, JP Timmermans, CJ Vrints. Myocardial ischemia/reperfusion-injury, a clinical view on a complex pathophysiological process. International Journal of Cardiology 2005;100:179
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Cardiovascular disease: heart disease · Circulatory system pathology (I00–I52, 390–429)
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| Ischaemic |
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CD/CHD
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CAD · Coronary thrombosis · Coronary vasospasm · Coronary artery aneurysm · Coronary artery dissection · Myocardial Bridge
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Active ischemia
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Angina pectoris (Prinzmetal's angina, Stable angina) · Acute coronary (Unstable angina, Myocardial infarction / heart attack)
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Sequelae
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hours (Myocardial stunning, Hibernating myocardium) · days (Myocardial rupture) · weeks (Aneurysm of heart/Ventricular aneurysm, Dressler's syndrome)
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| Layers |
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Pericardium
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Pericarditis (Acute, Chronic/Constrictive) · Pericardial effusion (Hemopericardium, Cardiac tamponade)
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Myocardium
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Myocarditis (Chagas disease)
Cardiomyopathy: Dilated (Alcoholic) · Hypertrophic · Restrictive (Loeffler endocarditis, Cardiac amyloidosis, Endocardial fibroelastosis)
Arrhythmogenic right ventricular dysplasia
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Endocardium/
valves
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Endocarditis
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Infective endocarditis (Subacute bacterial endocarditis) · noninfective endocarditis (Nonbacterial thrombotic endocarditis, Libman-Sacks endocarditis)
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Valves
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mitral (regurgitation, prolapse, stenosis) · aortic (stenosis, insufficiency) · tricuspid (stenosis, insufficiency) · pulmonary (stenosis, insufficiency)
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Conduction/
arrhythmia |
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Bradycardia
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Sinus bradycardia · Sick sinus syndrome
Heart block: Sinoatrial · AV (1°, 2°, 3°) · Intraventricular (Bundle branch/Right/Left, Left anterior fascicular/Left posterior fascicular, Bifascicular/Trifascicular) · Adams–Stokes syndrome
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Tachycardia
(paroxysmal and sinus)
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Supraventricular
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Atrial (Multifocal) · Junctional (AV nodal reentrant, Junctional ectopic)
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Ventricular
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Torsades de pointes · Catecholaminergic polymorphic · Accelerated idioventricular rhythm
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Premature contraction
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Atrial · Ventricular
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Pre-excitation syndrome
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Wolff-Parkinson-White · Lown-Ganong-Levine
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Flutter/fibrillation
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Atrial flutter · Ventricular flutter · Atrial fibrillation (Familial) · Ventricular fibrillation
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Pacemaker
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Wandering pacemaker · Ectopic pacemaker/Ectopic beat · Parasystole · Multifocal atrial tachycardia · Pacemaker syndrome
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Long QT syndrome
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Romano-Ward syndrome · Andersen-Tawil syndrome · Jervell and Lange-Nielsen syndrome
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Cardiac arrest
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Sudden cardiac death · Asystole · Pulseless electrical activity · Sinoatrial arrest
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Other/ungrouped
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hexaxial reference system (Right axis deviation, Left axis deviation) · QT (Short QT syndrome) · T (T wave alternans) · ST (Osborn wave, ST elevation, ST depression)
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| Cardiomegaly |
Ventricular hypertrophy (Left, Right/Cor pulmonale) · Atrial enlargement (Left, Right)
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| Other |
Cardiac fibrosis · Heart failure (Diastolic heart failure, Cardiac asthma) · Rheumatic fever
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noco/cong/tumr, sysi/epon, injr
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proc, drug (C1A/1B/1C/1D), blte
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UpToDate Contents
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English Journal
- Hyperkalemia-induced accelerated idioventricular rhythm in a patient with acute renal failure.
- Gul EE, Erdogan HI, Yıldırım O, Soylu A, Nikus KC.SourceDepartment of Cardiology, Meram School of Medicine, Selcuk University , Konya , Turkey.
- Renal failure.Ren Fail.2012;34(4):543-4. Epub 2012 Jan 20.
- Electrolyte disorders can alter cardiac ionic currents and depending on the changes can promote proarrhythmic effects. Potassium (K(+)) is the most common intracellular cation related to arrhythmic disorders. Hyperkalemia is mainly seen in the setting of impaired renal function. Severe hyperkalemia
- PMID 22260440
- Rapidly fatal community-acquired pneumonia due to Klebsiella pneumoniae complicated with acute myocarditis and accelerated idioventricular rhythm.
- Chuang TY, Lin CJ, Lee SW, Chuang CP, Jong YS, Chen WJ, Hsueh PR.SourceDepartment of Internal Medicine, Tao-Yuan General Hospital, Department of Health, Executive Yuan, Taiwan.
- Journal of microbiology, immunology, and infection = Wei mian yu gan ran za zhi.J Microbiol Immunol Infect.2011 Dec 6. [Epub ahead of print]
- We describe a previously healthy 52-year-old man with rapidly fatal community-acquired pneumonia caused by Klebsiella pneumoniae. The patient developed acute renal dysfunction, accelerated idioventricular rhythm (acute myocarditis), lactic acidosis and septic shock. He died within 15 hours after adm
- PMID 22153763
Japanese Journal
- 9) AIVRで梗塞部位を推定し得た心筋梗塞の一例(第104回日本循環器学会近畿地方会)
- 岸田 聡,林 宏憲,阪本 貴,西尾 学
- Circulation journal : official journal of the Japanese Circulation Society 72(Supplement_II), 984, 2008-04-20
- NAID 110006914596
- 87) 通常型心房粗動(AF)とaccelerated idioventricular rhythm (AIVR)を合併したwide QRS tachycardiaの一例
- 廣野 喜之,堀川 朋恵,芦川 英信,本川 克彦,平尾 見三,鈴木 文男,川良 徳弘
- Japanese circulation journal 64(SupplementIII), 879, 2000-10-20
- NAID 110002608797
Related Links
- 2008年4月27日 ... AIVRっていってもよくわからないですよね。accelerated idioventricular rhythmの略 ですね。 日本語名では頻脈性心室調律という名前でしょうか。 これは心室性期外収縮（ VPC）が連続して100bpm程度で見られる場合のものをこう呼びます。 ...
Related Pictures
★リンクテーブル★
[★]
- 英
- accelerated idioventricular rhythm、AIVR
- 関
- 頻脈性心室調律、促進型心室固有調律、頻脈性固有心室調律
[★]
- 英
- accelerated idioventricular rhythm、AIVR
- 関
- 促進型心室固有調律、頻拍性心室調律、頻脈性固有心室調律
[★]
- 英
- accelerated idioventricular rhythm、AIVR
- 関
- 頻脈性心室調律、頻拍性心室調律、頻脈性固有心室調律
[★]