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.

Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

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]

Farlex Partner Medical Dictionary © Farlex 2012

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.

The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

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.

McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.

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]

Medical Dictionary for the Health Professions and Nursing © Farlex 2012

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.

Collins Dictionary of Medicine © Robert M. Youngson 2004, 2005

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

Gale Encyclopedia of Medicine. Copyright 2008 The Gale Group, Inc. All rights reserved.

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]

Medical Dictionary for the Dental Professions © Farlex 2012