sinus rhythm

WordNet

1. commit a sin; violate a law of God or a moral law (同)transgress, trespass
2. violent and excited activity; "they began to fight like sin" (同)hell
3. estrangement from god (同)sinfulness, wickedness
4. an act that is regarded by theologians as a transgression of Gods will (同)sinning
5. the 21st letter of the Hebrew alphabet
6. recurring at regular intervals (同)regular recurrence
7. the basic rhythmic unit in a piece of music; "the piece has a fast rhythm"; "the conductor set the beat" (同)beat, musical rhythm
8. the arrangement of spoken words alternating stressed and unstressed elements; "the rhythm of Frosts poetry" (同)speech rhythm
9. any of various air-filled cavities especially in the bones of the skull

PrepTutorEJDIC

1. 〈U〉(宗教・道徳上の)『罪』 / 〈C〉(宗教・道徳上の)『罪の行為』,罪悪 / 〈C〉《特におどけて》違反(過失)の行為 / (宗教・道徳上の)おきてを破る,罪を犯す / (…に)違反(過失)をする,背く《+『against』+『名』》
2. sine
3. 〈U〉『律動,リズム』;韻律 / 〈C〉(特定の)リズム
4. 洞(どう)(骨や組織の中の穴・くぼみなど);静脈洞

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2012/03/01 22:51:51」(JST)

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Schematic representation of normal sinus rhythm showing standard waves, segments, and intervals

In medicine, sinus rhythm is the normal beating of the heart, as measured by an electrocardiogram (ECG). It has certain generic features that serve as hallmarks for comparison with normal ECGs.

ECG structure

Main article: Electrocardiography

There are typically six distinct waves (identified by the letters P, Q, R, S, T, and U) in a single beat of the heart in sinus rhythm, and they occur in a specific order, over specific periods of time, with specific relative sizes. While there is a significant range within which variations in rhythm are considered normal, anything that deviates from sinus rhythm by more than a certain amount may be indicative of heart disease.

See also Heart rate variability.

Cardiac Conduction System and Pathway

The cardiac conduction system is a pathway that consists of specialized cells, known as myocytes (cardiac cells), which create the natural electrical impulse that informs the heart when it needs to pump. The location within the conduction system that gives rise to electrical impulses is known as the pacemaker. The initial impulse originates in the sinoatrial (SA) node, or sinus node, which is located in the upper right atrium of the heart. The SA node is designated as the pacemaker of the heart. From the SA node, the electrical impulse spreads through interatrial tracts that spread the electrical impulse through the right and left atria and therefore cause atrial depolarization. As a result, a P wave is observed. After the atria depolarize, the electrical impulse spreads through the internodal tracts and reach the atrioventricular (AV) node. The AV node has its own pacing rhythm that serves as a back up pacemaker in case the SA node fails to initiate an electrical impulse. Consequently, the AV node slows down the electrical impulse to allow the atria to project their blood into the ventricles. From the AV node, the impulse travels through the bundle of His, which bifurcate into the left and right bundle branches. From the branches, the impulse travels through the Purkinje fibers and allows the electrical impulse to end in the ventricles to initiate ventricular depolarization. Consequently, a QRS complex is observed.

Sinus rhythm on ECG

Sinus rhythm, more commonly referred to as Normal Sinus Rhythm, is designated as the normal rhythm of the heart. Several requirements must be met for an electrocardiogram to be classified as normal sinus rhythm. Criteria for a Normal Sinus Rhythm include:

1. A heart rate between 60-100 beats per minute.
2. Regularity- Regular
3. The SA node pacing the heart.Therefore, a "P" wave must be present for every "QRS" complex in a ratio of 1:1.
4. PR interval is between .12 second and .20 second.
5. QRS complex width should be less than .12 second.

External links

• Normal Sinus Rhythm

UpToDate Contents

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• 1. 正常洞調律および洞性不整脈 normal sinus rhythm and sinus arrhythmia
• 2. 小児における身体的診察：一般原則および標準的な測定 the pediatric physical examination general principles and standard measurements
• 3. 心房粗動における洞調律の回復 restoration of sinus rhythm in atrial flutter
• 4. 心房細動患者における洞調律維持のための抗不整脈剤：推奨 antiarrhythmic drugs to maintain sinus rhythm in patients with atrial fibrillation recommendations
• 5. 心電図チュートリアル：洞結節での調律および不整脈 ecg tutorial rhythms and arrhythmias of the sinus node

English Journal

• Five-minute heart rate variability can predict obstructive angiographic coronary disease.

• Kotecha D, New G, Flather MD, Eccleston D, Pepper J, Krum H.SourceClinical Trials and Evaluation Unit, Royal Brompton Hospital, Sydney Street, London SW3 6NP, UK; dipak.kotecha@monash.edu.
• Heart (British Cardiac Society).Heart.2012 Mar;98(5):395-401. Epub 2011 Nov 25.
• Objective Obstructive coronary artery disease (CAD) is evident in only half of patients referred for diagnostic angiography. Five-minute heart rate variability (HRV) is a non-invasive marker for autonomic control of the vasculature, which this study hypothesised could risk-stratify cardiac patients
• PMID 22121069

• Review of contemporary antiarrhythmic drug therapy for maintenance of sinus rhythm in atrial fibrillation.

• Singla S, Karam P, Deshmukh AJ, Mehta J, Paydak H.Source1Cardiology, University of Arkansas for Medical Sciences, Little Rock, AR, USA.
• Journal of cardiovascular pharmacology and therapeutics.J Cardiovasc Pharmacol Ther.2012 Mar;17(1):12-20. Epub 2011 Feb 18.
• Atrial fibrillation (AF) is the most common rhythm disturbance seen in clinical practice, and its prevalence and incidence are rising rapidly as the population ages with its attendant complications. Management of AF involves anticoagulation, and fortunately new drugs for long-term anticoagulation ar
• PMID 21335483

Japanese Journal

• An Experience of Landiolol Use for an Advanced Heart Failure Patient With Severe Hypotension

• Nitta Daisuke,Kinugawa Koichiro,Imamura Teruhiko,Endo Miyoko,Amiya Eisuke,Inaba Toshiro,Maki Hisataka,Hatano Masaru,Komuro Issei
• International Heart Journal advpub(0), 2015
• … After landiolol administration, his heart rate decreased to 110 bpm, and finally returned to sinus rhythm without hemodynamic deterioration. … Intra-aortic balloon pumping was inserted soon after sinus recovery and he was discharged successfully with an implantable left ventricular assist device. …
• NAID 130005098505

• Effective Management of Atrioventricular Interval for Paroxysmal Atrial Fibrillation That Developed After DDDR Pacemaker Implantation in a Sick Sinus Syndrome Patient

• Tasaki Hirofumi,Ashizawa Naoto,Nagao Shoichi,Fukushima Kiyoyasu,Furukawa Ryuji,Fukae Satoki,Maemura Koji
• International Heart Journal advpub(0), 2015
• … A 68-year-old man with sick sinus syndrome (SSS) was referred to our department for pacemaker implantation. …
• NAID 130005098498

Related Links

• sinus rhythm - definition of sinus rhythm by Medical dictionary

sinus rhythm n. A normal cardiac rhythm proceeding from the sinoatrial node. sinus rhythm, a cardiac rhythm stimulated by the sinus node. A rate of 60-100 beats/min is normal. rhythm [rith´m] a measured movement; the recurrence ...

• sinus rhythm - definition of sinus rhythm by The Free Dictionary

rhythm (rĭth′əm) n. 1. Movement or variation characterized by the regular recurrence or alternation of different quantities or conditions: the rhythm of the ... Eighty-four percent (84%) of the patients were in sinus rhythm and 77% were in sinus rhythm ...

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★リンクテーブル★

リンク元	「洞調律」
関連記事	「rhythm」

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sinus rhythm

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洞リズム

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• リズム