right bundle-branch block

右脚ブロック RBBB

WordNet

1. toward or on the right; also used figuratively; "he looked right and left"; "the party has moved right"
2. (frequently plural) the interest possessed by law or custom in some intangible thing; "mineral rights"; "film rights"
3. anything in accord with principles of justice; "he feels he is in the right"; "the rightfulness of his claim" (同)rightfulness
4. a turn toward the side of the body that is on the south when the person is facing east; "take a right at the corner"
5. the hand that is on the right side of the body; "he writes with his right hand but pitches with his left"; "hit him with quick rights to the body" (同)right_hand
6. those who support political or social or economic conservatism; those who believe that things are better left unchanged (同)right wing
7. an abstract idea of that which is due to a person or governmental body by law or tradition or nature; "they are endowed by their Creator with certain unalienable Rights"; "Certain rights can never be granted to the government but must be kept in the hands
8. location near or direction toward the right side; i.e. the side to the south when a person or object faces east; "he stood on the right"
9. make reparations or amends for; "right a wrongs done to the victims of the Holocaust" (同)compensate, redress, correct
10. correct in opinion or judgment; "time proved him right" (同)correct
11. exactly; "he fell flop on his face" (同)flop
12. an interjection expressing agreement (同)right on
13. intended for the right hand; "a right-hand glove" (同)right-hand
14. (of the side of cloth or clothing) facing or intended to face outward; "the right side of the cloth showed the pattern"; "be sure your shirt is right side out"
15. being or located on or directed toward the side of the body to the east when facing north; "my right hand"; "right center field"; "a right-hand turn"; "the right bank of a river is the bank on your right side when you are facing downstream"
16. completely; "she felt right at home"; "he fell right into the trap"
17. having the axis perpendicular to the base; "a right angle"
18. immediately; "she called right after dinner"
19. in conformance with justice or law or morality; "do the right thing and confess"
20. in or into a satisfactory condition; "things are right again now"; "put things right"
21. of or belonging to the political or intellectual right
22. precisely, exactly; "stand right here!"
23. put in or restore to an upright position; "They righted the sailboat that had capsized"
24. regain an upright or proper position; "The capsized boat righted again"
25. a three-dimensional shape with six square or rectangular sides (同)cube
26. (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"
27. support, secure, or raise with a block; "block a plate for printing"; "block the wheels of a car"
28. a solid piece of something (usually having flat rectangular sides); "the pyramids were built with large stone blocks"
29. housing in a large building that is divided into separate units; "there is a block of classrooms in the west wing"
30. a rectangular area in a city surrounded by streets and usually containing several buildings; "he lives in the next block" (同)city block
31. 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
32. 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"
33. interrupt the normal function of by means of anesthesia; "block a nerve"; "block a muscle"
34. run on a block system; "block trains"
35. shape by using a block; "Block a hat"; "block a garment"
36. shape into a block or blocks; "block the graphs so one can see the results clearly"
37. stamp or emboss a title or design on a book with a block; "block the book cover"
38. a part of a forked or branching shape; "he broke off one of the branches" (同)leg, ramification
39. divide into two or more branches so as to form a fork; "The road forks" (同)ramify, fork, furcate, separate
40. a division of a stem, or secondary stem arising from the main stem of a plant
41. a division of some larger or more complex organization; "a branch of Congress"; "botany is a branch of biology"; "the Germanic branch of Indo-European languages" (同)subdivision, arm
42. a stream or river connected to a larger one
43. connect or secure to; "They rigged the bomb to the ignition"
44. formation of masts, spars, sails, etc., on a vessel (同)rigging
45. gear (including necessary machinery) for a particular enterprise
46. manipulate in a fraudulent manner; "rig prices" (同)manipulate
47. arrange the outcome of by means of deceit; "rig an election" (同)set_up
48. equip with sails or masts; "rig a ship" (同)set, set_up
49. make into a bundle; "he bundled up his few possessions" (同)bundle_up, roll_up
50. sleep fully clothed in the same bed with ones betrothed (同)practice bundling
51. a package of several things tied together for carrying or storing (同)sheaf

PrepTutorEJDIC

1. 《名試の前にのみ用いて》『右の』,右側の / 《しばしば『R-』》(政治上)『右派の』,保守的な / 〈U〉《the~》『右』,右側,右方 / 〈C〉『右手』(right hand) / 〈U〉《集合的に》《しばしばthe R-》(政治上の)右派,保守派 / 〈C〉(野球の)右翼(right field) / 『右に』,右側に,右方に
2. 《補語にのみ用いて》(道徳的に)『正しい』,正当な,正義の(just) / (人,人の判断・意見などが)『間偉いのない』,正しい(correct) / (事実に合って)『正しい』,正確な / 適切な,ぴったりの / (精神が)健全な,まともな;(心身が)健康な / 表の,正面の / 〈U〉(道徳的な)『正しさ』,正義;正しい行い / 〈C〉〈U〉(法律上・道徳上の)権利 / 〈U〉〈C〉《複数形で》(政治的・社会的な)人権,権利 / 《話》『まっすぐに』;まともに(directly) / 《話》『きっかり』,ちょうど(exactly) / 正確に,間違いなく(correctly) / (道徳的に)正しく,公正に / すっかり,完全に(completely);ずっと(all the way) / 適切に,ふさわしく;都合よく,うまく / 《おもに米話》すぐに,ただちに / 《特定の称号に付けて》非常に(very) / …‘を'正しい位置(状態)に戻す,立ち直らせる,整とんする / 〈誤りなど〉‘を'正す
3. (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
4. 『枝』 / 『支流』,支脈,支線;分家 / 『支店』,『支部』,支局 / (学問の)『部門』,分科 / 枝を出す,枝を広げる / (川・道・鉄道などが)分岐する
5. 〈船〉‘を'艤装(ぎそう)する / (マストなどを)〈船〉‘に'つける《+『名』+『with』+『名』》;(マストに)〈帆〉‘を'つける《+『名』+『to』+『名』》 / …‘に'装備をつける;…‘を'装備する《+『up』+『名,』+『名』+『up』》 / 船の装備(帆装),艤装(ぎそう) / (特定の目的のための)道具,用具 / 《英話》衣服,服装(clothing)
6. 〈他〉〈相場など〉を不正な手段であやつる
7. (…の)『束』,『包み』,巻いたもの(旅行者の荷物など)《+『of』+『名』》 / …'を'包みにする,束にする / (…に)…'を'ごっちゃに投げ込む《+『名』+『into』+『名』》 / 荷物をまとめてさっさと出て行く《+『off』(『out』,『away』)》

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2015/11/23 17:12:54」(JST)

wiki en

[Wiki en表示]

Right bundle branch block
ECG characteristics of a typical RBBB showing wide QRS complexes with a terminal R wave in lead V1 and slurred S wave in lead V6.
Classification and external resources
Specialty	Cardiology
ICD-10	I45.1
ICD-9-CM	426.4
DiseasesDB	11620
eMedicine	ped/2500

A right bundle branch block (RBBB) is a heart block in the electrical conduction system.

During a right bundle branch block, the right ventricle is not directly activated by impulses travelling through the right bundle branch. The left ventricle however, is still normally activated by the left bundle branch. These impulses are then able to travel through the myocardium of the left ventricle to the right ventricle and depolarise the right ventricle this way. As conduction through the myocardium is slower than conduction through the Bundle of His-Purkinje fibres, the QRS complex is seen to be widened. The QRS complex often shows an extra deflection which reflects the rapid depolarisation of the left ventricle followed by the slower depolarisation of the right ventricle.

In most cases right bundle branch block has a pathological cause though it is also seen in healthy individuals.

Diagnosis

Normal electrical conduction system of the heart (Schematic). All myocardial segments are excited almost simultaneously (purple staining).

1. Sinoatrial node

2. Atrioventricular node.

Conduction in RBBB (Schematic): With a blockage in the right bundle branch (red), the left ventricle is excited in time (purple), while the excitation of the right ventricle takes a detour via the left bundle branch (blue arrows).

The criteria to diagnose a right bundle branch block on the electrocardiogram:

• The heart rhythm must originate above the ventricles (i.e. sinoatrial node, atria or atrioventricular node) to activate the conduction system at the correct point.
• The QRS duration must be more than 100 ms (incomplete block) or more than 120 ms (complete block)
• There should be a terminal R wave in lead V1 (e.g. R, rR', rsR', rSR' or qR)
• There should be a slurred S wave in leads I and V6.

The T wave should be deflected opposite the terminal deflection of the QRS complex. This is known as appropriate T wave discordance with bundle branch block. A concordant T wave may suggest ischemia or myocardial infarction.

A mnemonic to distinguish between ECG signatures of left bundle branch block (LBBB) and right, is WiLLiaM MaRRoW; i.e., with LBBB, there is a W in lead V1 and an M in lead V6, whereas, with RBBB, there is an M in V1 and a W in V6.

• RBBB with associated first degree AV block

• RBBB with associated tachycardia

• RBBB

Causes

An atrial septal defect is one possible cause of a right bundle branch block. In addition, a right bundle branch block may also result from Brugada syndrome, right ventricular hypertrophy, pulmonary embolism, ischaemic heart disease, rheumatic heart disease, myocarditis, cardiomyopathy or hypertension.

Epidemiology

Prevalence of RBBB increases with age.

Treatment

The underlying condition may be treated by medications to control hypertension or diabetes, if they are the primary underlying cause. If coronary arteries are blocked, an invasive coronary angioplasty may relieve the impending RBBB.

See also

• Bundle branch block
• Left bundle branch block

References

UpToDate Contents

全文を閲覧するには購読必要です。 To read the full text you will need to subscribe.

• 1. 右脚ブロック right bundle branch block
• 2. 心室内伝導遅延への基本的アプローチ basic approach to delayed intraventricular conduction
• 3. 心電図チュートリアル：心室内ブロック ecg tutorial intraventricular block
• 4. 脚ブロックまたはペーシング調律存在下での心筋梗塞の心電図による診断 electrocardiographic diagnosis of myocardial infarction in the presence of bundle branch block or a paced rhythm
• 5. 心筋梗塞後の伝導異常 conduction abnormalities after myocardial infarction

English Journal

• Electrocardiographic Findings in Patients With Acute Coronary Syndrome Presenting With Out-of-Hospital Cardiac Arrest.

• Sarak B1, Goodman SG2, Brieger D3, Gale CP4, Tan NS1, Budaj A5, Wong GC6, Huynh T7, Tan MK8, Udell JA9, Bagai A1, Fox KAA10, Yan AT11; Global Registry of Acute Coronary Events (GRACE) Investigators and the Canadian Acute Coronary Syndromes I Investigators.
• The American journal of cardiology.Am J Cardiol.2018 Feb 1;121(3):294-300. doi: 10.1016/j.amjcard.2017.10.030. Epub 2017 Nov 3.
• PMID 29197473

• Magnetic Resonance Imaging Correlates of Left Bundle Branch Disease in Patients With Nonischemic Cardiomyopathy.

• Grigoratos C1, Liga R2, Bennati E3, Barison A4, Todiere G5, Aquaro GD5, Dell'Omodarme M6, Emdin M4, Masci PG7.
• The American journal of cardiology.Am J Cardiol.2018 Feb 1;121(3):370-376. doi: 10.1016/j.amjcard.2017.10.024. Epub 2017 Nov 6.
• PMID 29191565

• Anomalous origin of coronary arteries from the "wrong" sinus in athletes: Diagnosis and management strategies.

• Palmieri V1, Gervasi S1, Bianco M1, Cogliani R1, Poscolieri B1, Cuccaro F1, Marano R2, Mazzari M3, Basso C4, Zeppilli P5.
• International journal of cardiology.Int J Cardiol.2018 Feb 1;252:13-20. doi: 10.1016/j.ijcard.2017.10.117. Epub 2017 Nov 8.
• PMID 29146296

Japanese Journal

• Brugada 症候群の発生機序:─自験例よりの検討─

• 日大医誌 77(2), 77-85, 2018
• NAID 130007384397

• Arrhythmogenic Right Ventricular Cardiomyopathy with Multiple Thrombi and Ventricular Tachycardia of Atypical Left Branch Bundle Block Morphology

• Int. Heart J. 59(3), 652-654, 2018
• NAID 130007378346

• Arrhythmogenic Right Ventricular Cardiomyopathy with Multiple Thrombi and Ventricular Tachycardia of Atypical Left Branch Bundle Block Morphology

• Int. Heart J., 2018
• NAID 130006647117

Related Links

• Right bundle branch blockとは - goo Wikipedia (ウィキペディア)

A right bundle branch block (RBBB) is a defect in the heart's electrical conduction system. [1] During a right bundle branch block, the right ventricle is not directly activated by impulses travelling through the right bundle branch. The ...

• Bundle branch block - Mayo Clinic

The delay or blockage may occur on the pathway that sends electrical impulses to the left or the right side of the bottom chambers (ventricles) of your heart. Bundle branch block sometimes makes it harder for your heart to pump ...

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★リンクテーブル★

リンク元	「右脚ブロック」「RBBB」
関連記事	「block」「branch」「right」「branched」「bundle」

「右脚ブロック」

　　[★]

英

right bundle branch block right bundle-branch block RBBB

関

左脚ブロック、束枝ブロック、脚ブロック

• 完全右脚ブロック
• 不完全右脚ブロック

脚ブロックと心音、電気軸との関係

		心機能の予後	心音	電気軸	原因
右脚ブロック		良好	病的分裂(IIP遅延)	不変(YN.C-50)/右軸偏位
左脚ブロック		良好ではない	奇異性分裂(IIA遅延)		虚血性心疾患、高血圧、心筋症、心不全、左室肥大
	左脚前枝ブロック			左軸偏位
	左脚後枝ブロック			右軸偏位

心電図

• V1でrSR' ：R'は右室の興奮を表し幅広く高い波。

「RBBB」

　　[★] 右脚ブロック, right bundle-branch block

「block」

　　[★]

• n.

• 遮断、塊、ブロック

• v.

• 遮断する、ブロックする、封鎖する、阻止する

関

blockade、blockage、deter、inhibit、inhibition、lump、prevent、prevention、repress、repression、seal、turn off

　 　 　 　 　 　 　 　 　 　 　 　 　 　

「branch」

　　[★]

• n.

• 枝分れ、枝、分岐部、部門、ブランチ

• v.

• 枝分れする、分枝する

関

arbor、arborization、branched、branched chain、branching、class、department、division、ramification、ramus、section、sector

　 　 　 　 　 　

「right」

　　[★]

• n.

• 右、権利

• adj.

• 正しい、右位の、直角の

関

correct、dexter、dextroposition、fair、human right、rectangular、right angle

　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　

「branched」

　　[★]

• adj.

• 分枝の

関

arbor、arborization、branch、branched chain、branching、ramification

　

「bundle」

　　[★]

• n.

• 束、線維束

• v.

• 束ねる

関

fascicle、fasciculi、fasciculus