junctional escape beat

房室接合部調律

WordNet

1. a single pulsation of an oscillation produced by adding two waves of different frequencies; has a frequency equal to the difference between the two oscillations
2. strike (water or bushes) repeatedly to rouse animals for hunting
3. a regular rate of repetition; "the cox raised the beat"
4. a stroke or blow; "the signal was two beats on the steam pipe"
5. the act of beating to windward; sailing as close as possible to the direction from which the wind is blowing
6. a regular route for a sentry or policeman; "in the old days a policeman walked a beat and knew all his people by name" (同)round
7. the sound of stroke or blow; "he heard the beat of a drum"
8. come out better in a competition, race, or conflict; "Agassi beat Becker in the tennis championship"; "We beat the competition"; "Harvard defeated Yale in the last football game" (同)beat_out, crush, shell, trounce, vanquish
9. give a beating to; subject to a beating, either as a punishment or as an act of aggression; "Thugs beat him up when he walked down the street late at night"; "The teacher used to beat the students" (同)beat_up, work over
10. avoid paying; "beat the subway fare" (同)bunk
11. move with a flapping motion; "The birds wings were flapping" (同)flap
12. move with a thrashing motion; "The bird flapped its wings"; "The eagle beat its wings and soared high into the sky" (同)flap
13. move rhythmically; "Her heart was beating fast" (同)pound, thump
14. stir vigorously; "beat the egg whites"; "beat the cream" (同)scramble
15. be superior; "Reading beats watching television"; "This sure beats work!"
16. glare or strike with great intensity; "The sun was beating down on us"
17. hit repeatedly; "beat on the door"; "beat the table with his shoe"
18. indicate by beating, as with the fingers or drumsticks; "Beat the rhythm"
19. make by pounding or trampling; "beat a path through the forest"
20. produce a rhythm by striking repeatedly; "beat the drum"
21. sail with much tacking or with difficulty; "The boat beat in the strong wind"
22. shape by beating; "beat swords into ploughshares"
23. strike (a part of ones own body) repeatedly, as in great emotion or in accompaniment to music; "beat ones breast"; "beat ones foot rhythmically"
24. issue or leak, as from a small opening; "Gas escaped into the bedroom"
25. a plant originally cultivated but now growing wild
26. an inclination to retreat from unpleasant realities through diversion or fantasy; "romantic novels were her escape from the stress of daily life"; "his alcohol problem was a form of escapism" (同)escapism
27. the act of escaping physically; "he made his escape from the mental hospital"; "the canary escaped from its cage"; "his flight was an indication of his guilt" (同)flight
28. a means or way of escaping; "hard work was his escape from worry"; "they installed a second hatch as an escape"; "their escape route"
29. an avoidance of danger or difficulty; "that was a narrow escape"
30. the discharge of a fluid from some container; "they tried to stop the escape of gas from the damaged pipe"; "he had to clean up the leak" (同)leak, leakage, outflow
31. remove oneself from a familiar environment, usually for pleasure or diversion; "We escaped to our summer house for a few days"; "The president of the company never manages to get away during the summer" (同)get away
32. run away from confinement; "The convicted murderer escaped from a high security prison" (同)get away, break loose
33. to remain unmolested, undisturbed, or uninterrupted -- used only in infinitive form; "let her be"
34. work in a specific place, with a specific subject, or in a specific function; "He is a herpetologist"; "She is our resident philosopher" (同)follow
35. have life, be alive; "Our great leader is no more"; "My grandfather lived until the end of war" (同)live
36. be identical to; be someone or something; "The president of the company is John Smith"; "This is my house"
37. happen, occur, take place; "I lost my wallet; this was during the visit to my parents house"; "There were two hundred people at his funeral"; "There was a lot of noise in the kitchen"
38. have the quality of being; (copula, used with an adjective or a predicate noun); "John is rich"; "This is not a good answer"
39. occupy a certain position or area; be somewhere; "Where is my umbrella?" "The toolshed is in the back"; "What is behind this behavior?"
40. spend or use time; "I may be an hour"
41. the state of being joined together (同)conjunction, conjugation, colligation
42. an act of joining or adjoining things (同)adjunction
43. something that joins or connects (同)conjunction
44. the place where two or more things come together
45. the act of inflicting corporal punishment with repeated blows (同)thrashing, licking, drubbing, lacing, trouncing, whacking
46. the act of overcoming or outdoing (同)whipping

PrepTutorEJDIC

1. (連続して)…'を'『たたく』,打つ(pound) / (…に)…'を'『たたきつける』,打ちつける《+『名』+『against』+『名』》 / (…に)…'を'たたいて作る《+『名』+『into』+『名』》;〈金属〉'を'打ち延ばす / …'を'勢いよくかき混ぜる / 〈リズム・拍子〉'を'手をたたいて(手を振って,足を踏んで)とる / 〈道〉'を'踏み固めて作る / 《話》〈人〉'を'困らせる,まいらせる / 〈風・雨・波などが〉(…に)『打ちつける』,〈人が〉(…を)ドンドン打つ《+『at』(『against』,『in』,『on』)+『名』》 / 〈心臓・脈が〉鼓動する,脈打つ / ドンドン鳴る / 〈船が〉風に逆らってジグザグに進む / 『続けて打つこと』,連打 / (心臓などの)鼓動 / (警官などの)巡回(担当)区域,持ち場 / 拍子;手拍子,足拍子 / =beatnik / 《補語にのみ用いて》《俗》疲れはてた,へとへとになった / 《名詞の前にのみ用いて》《話》ビート族の
2. (危うく…から)『逃げ出す』,脱走する《+『from』(『out of』)+『名』》 / (危うく逮捕・危害などから)『免れる』《+『from』+『名』(do『ing』)》 / (容器などから)〈気体・液体・粒状物などが〉流出する,漏れる《+『from』(『out of』)+『名』》 / (未然に)…‘から'『逃げる』,逃れる,‘を'うまくかわす / 〈逮捕・危害など〉‘を'『免れる』,逃れる / 〈人〉‘に'忘れられる,‘の'注意を引かない;〈人の注意など〉‘を'引かない / 〈言葉・ため息などが〉〈人,人の口〉‘から'思わず出る / 〈C〉〈U〉(…から)『逃げ出すこと』,脱走;(…を)免れること《+『from』(『out of』)+『名』》 / 〈C〉(…から)逃げる(逃れる)手段,逃げ道《+『from』(『out of』)+『名』》 / 〈C〉(…からの)(ガス・水などの)漏れ《+『of』+『名』+『from』(『out of』)+『名』》
3. 《連結語として補語を伴なって…『である』,…だ,…です / 《位置・場所を表す語句を伴って》(…に)『ある』,いる(occupy a place or situation) / 〈物事が〉『存在する』,ある(exist);〈生物が〉生存する,生きている(live) / 行われる,起こる,発生する(take place, occur) / 存続する,そのままでいる(remain as before) / 《『be to』 do》 / …する予定である,…することになっている / …すべきだ / 《受動態の不定詞を伴って》…できる / 《命令》…するのだ / 《条件節に》…する意図がある / 《『if…were to』 do》…するとしたなら / 《『be』 do『ing』》《進行形》 / 《進行中の動作》…している,しつつある / 《近い未来》…しようとしている,するつもり / 《動作の反復》(いつも)…している / 《『be』+『他動詞の過去分詞』》《受動態》…される,されている / 《『be』+『自動詞の過去分詞』》《完了形》…した[状態にある]
4. 〈U〉〈C〉連結すること(された状態),『結合』,連合,合体 / 〈C〉『結合点』,連結(接合,合流)点 / 〈C〉(鉄道の)『連絡駅』,接続駅
5. 〈C〉打つこと;(罰としての)むち打ち / 〈C〉打ち負かすこと;敗北 / 〈U〉(心臓の)鼓動

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2013/11/02 17:53:19」(JST)

wiki en

[Wiki en表示]

A junctional escape beat is a delayed heartbeat originating not from the atrium but from an ectopic focus somewhere in the AV junction. It occurs when the rate of depolarization of the sinoatrial node falls below the rate of the atrioventricular node. This dysrhythmia also may occur when the electrical impulses from the SA node fail to reach the AV node because of SA or AV block. It is a protective mechanism for the heart, to compensate for the SA node no longer handling the pacemaking activity, and is one of a series of backup sites that can take over pacemaker function when the SA node fails to do so.

Etiology

A junctional escape complex is a normal response that may result from excessive vagal tone on the SA node, a pathological slowing of the SA discharge, or a complete AV block.

ECG Characteristics

• Rate: 40-60 bpm
• Rhythm: Irregular in single junctional escape complex; regular in junctional escape rhythm.
• P waves: Depends on the site of the ectopic focus. They will be inverted, and may appear before or after the QRS complex, or they may be absent, hidden by the QRS.
• P-R interval: If the P wave occurs before the QRS complex, the interval will be less than 0.12 seconds.
• QRS Complex: Usually normal in duration and morphology, less than 0.12 seconds.

Significance

Junctional rhythms (if a bradycardia), can cause decreased cardiac output. Therefore, the person may exhibit signs and symptoms similar to other bradycardia such as lightheadedness, dizziness, hypotension, and syncope. Usually this rhythm can be tolerated if the rate is above 50 bpm.

See also

• Ectopic beat
• Junctional rhythm

UpToDate Contents

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• 1. 上室性期外収縮 supraventricular premature beats
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English Journal

• Mucociliary clearance defects in a murine in vitro model of pneumococcal airway infection.

• Fliegauf M1, Sonnen AF, Kremer B, Henneke P.
• PloS one.PLoS One.2013;8(3):e59925. doi: 10.1371/journal.pone.0059925. Epub 2013 Mar 19.
• Mucociliary airway clearance is an innate defense mechanism that protects the lung from harmful effects of inhaled pathogens. In order to escape mechanical clearance, airway pathogens including Streptococcus pneumoniae (pneumococcus) are thought to inactivate mucociliary clearance by mechanisms such
• PMID 23527286

• Escape-echo bigeminy.

• Barold SS1, Stroobandt R, Herweg B.
• Journal of electrocardiology.J Electrocardiol.2012 Mar;45(2):167-9. doi: 10.1016/j.jelectrocard.2011.11.008. Epub 2012 Jan 5.
• Escape-capture bigeminy is a well-known arrhythmia characterized by group beating of a junctional beat followed by a conducted sinus beat. We report a variant of this arrangement where a junctional beat gives rise to a retrograde P wave, which is then conducted back to the ventricles producing a hit
• PMID 22225653

• Apparent AV junctional escape in Wenckebach AV block: markedly slow conduction through the slow AV pathway.

• Kinoshita S1, Katoh T, Hagisawa K, Fukushima T, Ikawa S.
• Journal of cardiovascular medicine (Hagerstown, Md.).J Cardiovasc Med (Hagerstown).2009 Feb;10(2):161-6. doi: 10.2459/JCM.0b013e32831a6a0d.
• We report here two cases of Wenckebach atrioventricular (AV) block in which apparent AV junctional escape was observed, but most likely resulted from markedly slow conduction through the slow pathway of dual AV junctional pathways. In these cases, it seems that a blocked P-wave was followed by an AV
• PMID 19194175

Japanese Journal

• 洞不全症候群におけるａｔｒｏｐｉｎｅ投与後のｊｕｎｃｔｉｏｎａｌ　ｒｈｙｔｈｍ出現と右房ｏｖｅｒｄｒｉｖｅ　ｓｕｐｐｒｅｓｓｉｏｎ後のｊｕｎｃｔｉｏｎａｌ　ｅｓｃａｐｅ　ｂｅａｔ出現の意義について

• 鈴木 博之,山口 巖,久賀 圭佑,来栖 武雄,杉下 靖郎,伊藤 巌
• 心電図 10(1), 55-65, 1990
• … 洞不全症候群におけるatropine投与後のjunctional rhythm (JR) 出現とoverdrive suppression後のjunctional escape beat (JEB) 出現各々の電気生理学的および病態生理学的意義を検討した.JR出現 (B) 群は対照 (D) 群より, 洞周期 (CL) がcontrolとatropine後に, 洞結節回復時間 (RT) がcontrolにおいて有意に大であり, JEB出現 (J) 群は対照 (N) 群より, RTがcontrolと薬理学的自律神経遮断後に有意に大 …
• NAID 130004244511

• CONCEALED PREEXCITATION AND WOLFF-PARKINSON-WHITE PATTERN POSSIBLY RELATED TO MAHAIM FIBERS

• , ,
• JAPANESE CIRCULATION JOURNAL 43(10), 923-933, 1979-11-20
• … ECGs of Case 1 did not demonstrate preexcitation but showed a peculiar arrhythmia consisting mainly of the sequence of trigeminy and quadrigeminy due to the occurrence of "supraventricular premature beat" which is preceded by inverted P wave and often showed aberrant conduction of right bundle branch block (RBBB) pattern and occasional anterograde conduction failure. … Intermittent conduction through the left-sided Mahaim fibers was the most likely mechanism of aberrant conduction of ventricular reciprocal beat (VRB). …
• NAID 110002580747

• 房室接合部の自動能に関する実験的研究 : overdrive suppression自律神経遮断による評価

• 棚橋 淑文
• 日本循環器学誌 41(9), 1043-1049, 1977-10-10
• … In most of these cases, however, an escape beat originated from the atiroventricular junction appears and prevents Adams-Stokes' attack accompanying the cardiac asystole. … Then the author experimentally treated dogs' hearts so as to beat with A-V junctional rhythm and evaluated the automaticity of the A-V junction on the bases of the following parameters : (1) the spontaneous heart rate of each dog and (2) the degree of overdrive suppression upon each dog. …
• NAID 110002582819

Related Links

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• Junctional escape beat - definition of Junctional escape beat ...

beat (bēt) a throb or pulsation, as of the heart or of an artery. apex beat the beat felt over the apex of the heart, normally in or near the fifth left intercostal space. atrioventricular (AV) junctional escape beat a depolarization initiated in ...

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★リンクテーブル★

リンク元	「房室接合部調律」
関連記事	「escape」「beat」「junction」「beating」「junctional」

「房室接合部調律」

　　[★]

英

atrioventricular junctional rhythm

同

房室接合部性調律, 接合部調律 junctional rhythm

関

房室接合部補充調律

[show details]

房室接合部補充調律 : 21 件
房室接合部補充収縮 : 41 件
接合部補充調律 : 66 件
接合部補充収縮 : 49 件

atrioventricular junctional escaped rhythm : 1 件
atrioventricular junctional escaped beat : 3 件
atrioventricular junctional escape rhythm : 29 件
atrioventricular junctional escape beat : 16 件
junctional escape rhythm : 約 5,200 件
junctional escape beat : 約 40,400 件
junctional escaped rhythm : 約 19 件
junctional escaped beat : 7 件

概念

• 房室接合部の自発的な興奮による調律
• 洞結節の機能低下や洞房伝導の異常が見られた場合にこの調律が生じる。
• 調律は規則正しいが、心拍数は40-60/分程度である。

心電図

• 逆行性P波：II,III,aVF。P波の出現するタイミングはQRSの前後、もしくはQRSに重なる
• 正常QRS

「escape」

　　[★]

• n.

• 回避、エスケープ、逃避、逸脱、漏れ

• v.

• 逃避する、逃げる、逸脱する、免れる

関

aberration、avoid、avoidance、circumvent、circumvention、departure、deviate、deviation、diverge、elude、evasion、flee、leak、leakage、prolapse

　 　 　 　 　 　 　 　 　 　

「beat」

　　[★]

• n.

• 拍動

• v.

• 拍動する、打ち負かす、打つ

関

beating、hit、strike

　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　 　

「junction」

　　[★]

• n.

• 接合部、移行部、接合点、ジャンクション

関

junctional、junctional region、juncture

　 　 　 　 　

「beating」

　　[★]

• n.

• 拍動、泡立て

• adj.

• 拍動している

関

beat

　 　 　

「junctional」

　　[★]

• adj.

• 接合部の

関

junction、junctional region、juncture