Arrhythmia

arrhythmia

 [ah-rith´me-ah]

variation from the normal rhythm, especially of the heartbeat; see also dysrhythmia. adj., adj arrhyth´mic.

sinus arrhythmia the physiologic cyclic variation in heart rate, originating in the sinoatrial node and related to vagal impulses to the node; it occurs commonly in children (juvenile arrhythmia) and in the aged.

ar·rhyth·mi·a

(ă-ridh'mē-ă), Avoid the misspelling arhythmia.

Loss or abnormality of rhythm; denoting especially an irregularity of the heartbeat. See also entries under rhythm Compare: dysrhythmia.

[G. a- priv. + rhythmos, rhythm]

arrhythmia

/ar·rhyth·mia/ (ah-rith´me-ah) variation from the normal rhythm of the heartbeat, encompassing abnormalities of rate, regularity, site of impulse origin, and sequence of activation.arrhyth´mic

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nonphasic arrhythmia  a form of sinus arrhythmia in which the irregularity is not linked to the phases of respiration.

sinus arrhythmia  the physiologic cyclic variation in heart rate related to vagal impulses to the sinoatrial node; it is common, particularly in children, and is not abnormal.

arrhythmia

(ə-rĭth′mē-ə)

n.

1. An irregularity in the force or rhythm of the heartbeat: a fatal arrhythmia.

2. A condition characterized by such irregularities: treatments for cardiac arrhythmia.

arrhythmia

[ərith′mē·ə]

Etymology: Gk, a + rhythmos, without rhythm

any deviation from the normal pattern of the heartbeat. Also spelled arhythmia. Compare dysrhythmia. arrhythmic, arrhythmical, adj.

arrhythmia

Cardiac pacing Any rhythm in the heart that falls outside the norm with respect to rate, regularity, and propagation sequence of depolarization wave. See Atrial arrhythmia, Cardiac arrhythmia, Proarrhythmia, Reentrant arrhythmia, Ventricular arrhythmia Cardiology Any variation in the normal rate or periodicity of heart beats.

ar·rhyth·mi·a

(ā-ridh'mē-ă)

Loss of rhythm; denoting especially an irregularity of the heartbeat.
See also: dysrhythmia

[G. a- priv. +rhythmos, rhythm]

arrhythmia

Any abnormality in the regularity of the heart beat. Arrythmia is caused by a defect in the generation or conduction of electrical impulses in the heart.

Arrhythmia or dysrhythmia

An abnormal rhythm or irregularity of the heartbeat. The heartbeat may either be too fast (tachycardia) or too slow (bradicardia). Arrhythmias may cause symptoms such as palpitation or light-headedness, but many have more serious consequences, including sudden death.

Mentioned in: Anesthesia, General, Antiarrhythmic Drugs, Atrial Fibrillation and Flutter, Caffeine, Cardiomyopathy, Carotid Sinus Massage, Cocaine, Electrocardiography, Erectile Dysfunction, Erectile Dysfunction Treatment, Fugu Poisoning, Implantable Cardioverter-Defibrillator, Myocarditis, Palpitations, Sick Sinus Syndrome, Sildenafil Citrate, Ventricular Aneurysm, Wolff-Parkinson-White Syndrome

ar·rhyth·mi·a

(ā-ridh'mē-ă) Avoid the misspelling arhythmia.

Loss or abnormality of rhythm; denoting especially an irregularity of the heartbeat.
Compare: dysrhythmia

[G. a- priv. + rhythmos, rhythm]

arrhythmia

variation from the normal rhythm, especially of the heartbeat. See also bradycardia, tachycardia.

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atrial arrhythmia

see atrial flutter, atrial fibrillation.

bradycardic arrhythmia

see bradyarrhythmia.

benign arrhythmia

one which is clinically insignificant.

cardiac arrhythmia

irregularity of the normal heart rhythm, either in frequency or amplitude, or almost always both.

exercise-induced arrhythmia

a cause of poor racing performance or sudden death while racing; detectable only by telemetered electrocardiography.

sinus arrhythmia

the physiological cyclic variation in heart rate related to vagal impulses to the sinoatrial node.

supraventricular a's

see sinoatrial arrest, atrial tachycardia, supraventricular tachycardia, atrial fibrillation.

ventricular a's

see premature heartbeats, ventricular tachycardia, ventricular fibrillation.