- 関
- atrioventricular block
WordNet
- a three-dimensional shape with six square or rectangular sides (同)cube
- (computer science) a sector or group of sectors that function as the smallest data unit permitted; "since blocks are often defined as a single sector, the terms `block and `sector are sometimes used interchangeably"
- support, secure, or raise with a block; "block a plate for printing"; "block the wheels of a car"
- a solid piece of something (usually having flat rectangular sides); "the pyramids were built with large stone blocks"
- housing in a large building that is divided into separate units; "there is a block of classrooms in the west wing"
- a rectangular area in a city surrounded by streets and usually containing several buildings; "he lives in the next block" (同)city block
- an inability to remember or think of something you normally can do; often caused by emotional tension; "I knew his name perfectly well but I had a temporary block" (同)mental_block
- a number or quantity of related things dealt with as a unit; "he reserved a large block of seats"; "he held a large block of the companys stock"
- interrupt the normal function of by means of anesthesia; "block a nerve"; "block a muscle"
- run on a block system; "block trains"
- shape by using a block; "Block a hat"; "block a garment"
- shape into a block or blocks; "block the graphs so one can see the results clearly"
- stamp or emboss a title or design on a book with a block; "block the book cover"
- the 1st letter of the Roman alphabet (同)a
- the blood group whose red cells carry the A antigen (同)type_A, group A
- completely obstructed or closed off; "the storm was responsible for many blocked roads and bridges"; "the drain was plugged" (同)plugged
- closed to traffic; "the repaving results in many blocked streets" (同)out of use
- a group of countries in special alliance (同)axis
- the act of obstructing or deflecting someones movements (同)block
PrepTutorEJDIC
- (木・石などの,通例平らな面のある)『かたまり』 / 《米》(四団を街路に囲まれた)『区画』,街区 / 街区の1辺の距離(一般に40メートル前後) / 《英》ブロック(アパート・事務所・商店などに区切られている大きな建物) / 『妨害物』,障害物(obstacle);(障害によって生じた)停滞,渋滞 / 台木,台(まないた・肉切り台・まき割り台・せり売り台・帽子の木型など);《the~》炭頭台 / (特にアメリカンフットボールで)ブロック(相手の選手の突進を阻止する) / 滑車(pulley) / (座席券・株券などの)一組《+『of』+『名』》 / 〈通路など〉'を'『ふさぐ』,〈通行・進行など〉'を'妨げる / 〈帽子など〉の型取りをする / (特にアメリカンフットボールで)〈相手選手の突進〉'を'ブロックする;(ボクシングで)〈相手のパンチ〉'を'ブロックする
- answer / ampere
- ブロック,圏(地理・共通の利害・政治・経済上の目的などのために団結した団体・国家などの結合体)
Wikipedia preview
出典(authority):フリー百科事典『ウィキペディア(Wikipedia)』「2016/08/26 09:00:05」(JST)
[Wiki en表示]
Atrioventricular block |
Classification and external resources |
Specialty |
cardiology |
ICD-10 |
I44.0-I44.3 |
ICD-9-CM |
426.0-426.1 |
eMedicine |
med/189 |
MeSH |
D054537 |
[edit on Wikidata]
|
Atrioventricular block (AV block) is a type of heart block in which the conduction between the atria and ventricles of the heart is impaired. Under normal conditions, the sinoatrial node (SA node) in the atria sets the pace for the heart, and these impulses travel down to the ventricles. In an AV block, this message does not reach the ventricles or is impaired along the way. The ventricles of the heart have their own pacing mechanisms, which can maintain a lowered heart rate in the absence of SA stimulation.
The causes of pathological AV block are varied and include ischaemia, infarction, fibrosis or drugs, and the blocks may be complete or may only impair the signaling between the SA and AV nodes. Certain AV blocks can also be found as normal variants, such as in athletes or children, and are benign.[1] Strong vagal stimulation may also produce AV block. The cholinergic receptor types affected are the muscarinic receptors.
There are three types:
- First-degree atrioventricular block - PR interval greater than 0.20sec.
- Second-degree atrioventricular block - Type 1 (aka Mobitz 1, Wenckebach): Progressive prolongation of PR interval with dropped beats (the PR interval gets longer and longer; finally one beat drops) . Type 2 (aka Mobitz 2, Hay): PR interval remains unchanged prior to the P wave which suddenly fails to conduct to the ventricles.
- Third-degree atrioventricular block - No association between P waves and QRS complexes.
-
Sinus rhythm with acute inferior infarction complicated by Type I A-V block manifest in the form of 5:4 Wenckebach periods; R-P/P-R reciprocity.
-
Sinus rhythm (rate = 100/min) with 3:2 and 2:1 Type II A-V block; RBBB
-
Sinus tachycardia with complete A-V block and resulting junctional escape
References
- ^ Lilly, Leonard (2006). Pathophysiology of Heart Disease. Lippincott Williams and Wilkins. ISBN 978-0-7817-6321-9. [page needed]
External links
- http://www.umm.edu/imagepages/1429.htm
- Second-Degree Atrioventricular Block at eMedicine
Cardiovascular disease I00–I52, 390–429
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Ischaemic |
Coronary disease
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- Coronary artery disease (CAD)
- Coronary artery aneurysm
- Coronary artery dissection
- Coronary thrombosis
- Coronary vasospasm
- Myocardial bridge
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Active ischemia
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- Angina pectoris
- Prinzmetal's angina
- Stable angina
- Acute coronary syndrome
- Myocardial infarction
- Unstable angina
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Sequelae
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- hours
- Hibernating myocardium
- Myocardial stunning
- days
- weeks
- Aneurysm of heart / Ventricular aneurysm
- Dressler syndrome
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|
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Layers |
Pericardium
|
- Pericarditis
- Acute
- Chronic / Constrictive
- Pericardial effusion
- Cardiac tamponade
- Hemopericardium
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|
Myocardium
|
- Myocarditis
- Cardiomyopathy: Dilated (Alcoholic), Hypertrophic, and 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
- non-infective endocarditis
- Libman–Sacks endocarditis
- Nonbacterial thrombotic endocarditis
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Valves
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- mitral
- regurgitation
- prolapse
- stenosis
- aortic
- tricuspid
- pulmonary
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|
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Conduction /
arrhythmia |
Bradycardia
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- Sinus bradycardia
- Sick sinus syndrome
- Heart block: Sinoatrial
- AV
- Intraventricular
- Bundle branch block
- Right
- Left
- Left anterior fascicle
- Left posterior fascicle
- Bifascicular
- Trifascicular
- Adams–Stokes syndrome
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Tachycardia
(paroxysmal and sinus)
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Supraventricular
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- Atrial
- Junctional
- AV nodal reentrant
- Junctional ectopic
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Ventricular
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- Accelerated idioventricular rhythm
- Catecholaminergic polymorphic
- Torsades de pointes
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|
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Premature contraction
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- Atrial
- Junctional
- Ventricular
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Pre-excitation syndrome
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- Lown–Ganong–Levine
- Wolff–Parkinson–White
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Flutter / fibrillation
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- Atrial flutter
- Ventricular flutter
- Atrial fibrillation
- Ventricular fibrillation
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Pacemaker
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- Ectopic pacemaker / Ectopic beat
- Multifocal atrial tachycardia
- Pacemaker syndrome
- Parasystole
- Wandering pacemaker
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Long QT syndrome
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- Andersen–Tawil
- Jervell and Lange-Nielsen
- Romano–Ward
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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
- T
- ST
- Osborn wave
- ST elevation
- ST depression
- Strain pattern
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|
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Cardiomegaly |
- Ventricular hypertrophy
- Left
- Right / Cor pulmonale
- Atrial enlargement
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Other |
- Cardiac fibrosis
- Heart failure
- Diastolic heart failure
- Cardiac asthma
- Rheumatic fever
|
UpToDate Contents
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English Journal
- Chiroptical characterization of homopolymeric block fractions in alginates.
- Martínez-Gómez F1, Mansilla A2, Matsuhiro B3, Matulewicz MC4, Troncoso-Valenzuela MA5.
- Carbohydrate polymers.Carbohydr Polym.2016 Aug 1;146:90-101. doi: 10.1016/j.carbpol.2016.03.047. Epub 2016 Mar 19.
- Homopolymannuronic and homopolyguluronic fractions were obtained by partial hydrolysis of the alkaline extracts from the brown seaweeds Ascoseira mirabilis, Desmarestia menziessi, Desmarestia ligulata and Durvillaea sp. collected in southern Chile. Full characterization of the fractions was achieved
- PMID 27112854
- The relationship between culprit artery and the clinical outcomes in patients undergoing primary percutaneous coronary ıntervention for ınferior wall ST segment elevation myocardial ınfarction.
- Ayhan E1, Isik T, Ghannadian B, Akgül O, Alagic N.
- Minerva cardioangiologica.Minerva Cardioangiol.2016 Aug;64(4):367-74. Epub 2014 Dec 17.
- BACKGROUND: We observed the effect of culprit artery in patients undergoing primary percutaneous coronary intervention (PCI) caused by inferior wall ST elevation myocardial infarction (STEMI) during hospital stay and 6-month follow-ups.METHODS: After exclusion, 233 consecutive patients with inferior
- PMID 25516137
- Symptomatic exercise-induced complete atrioventricular block due to severe superior vena cava stenosis.
- Simantirakis E1, Marketou M1, Kehagias E2, Kanoupakis E1, Hamilos M1, Vardas P3.
- International journal of cardiology.Int J Cardiol.2016 Jul 15;215:167-8. doi: 10.1016/j.ijcard.2016.04.123. Epub 2016 Apr 16.
- PMID 27116327
Japanese Journal
- Surgical Outcome in Hemodialysis Patients with Active-Phase Infective Endocarditis
- Beat-to-Beat Variability in Preload Unmasks Latent Risk of Torsade de Pointes in Anesthetized Chronic Atrioventricular Block Dogs
- Beat-to-Beat Variability in Preload Unmasks Latent Risk of Torsade de Pointes in Anesthetized Chronic Atrioventricular Block Dogs
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Related Pictures
![three different types of AV nodal block](https://1mg.info/0/f/3/2642.jpg)
![AV Block 2nd Degree Mobitz I (Wenckebach](https://1mg.info/0/f/3/2643.jpg)
![PREV : Mobitz II 2° AV Block](https://1mg.info/0/f/3/2644.jpg)
![-Degree AV Block (Mobitz Type II Block](https://1mg.info/0/f/3/2645.jpg)
![First-Degree AV Block](https://1mg.info/0/f/3/2646.jpg)
★リンクテーブル★
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- 英
- AV block
- 関
- 房室ブロック
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- 関
- blockade、blockage、deter、inhibit、inhibition、lump、prevent、prevention、repress、repression、seal、turn off
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