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arrhythmia

[uh-rith -mee-uh, ey-rith -] /əˈrɪð mi ə, eɪˈrɪð-/
noun, Pathology
1.
any disturbance in the rhythm of the heartbeat.
Also, arhythmia.
Origin
1885-1890
1885-90; < Neo-Latin < Greek arrhythmía. See a-6, rhythm, -ia
Related forms
arrhythmic
[uh-rith -mik, ey-rith -] /əˈrɪð mɪk, eɪˈrɪð-/ (Show IPA),
arrhythmical, adjective
arrhythmically, adverb
Can be confused
arrhythmic, eurhythmic.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples from the web for arrhythmic
  • Here, the distinction is not between rhythmic and arrhythmic, but between online and offline.
  • For years he'd been studying the phenomenon of chaos, of which an arrhythmic heartbeat was a perfect example.
  • However, anti-arrhythmic medications may have severe side effects.
  • Anti-arrhythmic drugs help control irregular heartbeats.
  • Some people with arrhythmias may need anti-arrhythmic medications.
  • For many years, cardiologists used anti-arrhythmic drugs and electrocardiograms as surrogate markers for the underlying cause.
British Dictionary definitions for arrhythmic

arrhythmia

/əˈrɪðmɪə/
noun
1.
any variation from the normal rhythm in the heartbeat
Word Origin
C19: New Latin, from Greek arrhuthmia, from a-1 + rhuthmosrhythm
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for arrhythmic
adj.

1853, "without rhythm," in relation to musical sensibility, Modern Latin, from Greek arrhythmos "irregular, unrhythmical, without measure," from a- "not" (see a- (3)) + rhythmos (see rhythm). Medical arrhythmia "irregularity of pulse" is attested from 1888, from Greek noun of action from arrhythmos. Related: Arrhythmically.

Online Etymology Dictionary, © 2010 Douglas Harper
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arrhythmic in Medicine

arrhythmia ar·rhyth·mi·a (ə-rĭð'mē-ə)
n.
An irregularity in the force or rhythm of the heartbeat.

arrhythmic ar·rhyth·mic (ə-rĭð'mĭk)
adj.
Lacking rhythm or regularity of rhythm.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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arrhythmic in Science
arrhythmia
  (ə-rĭ'mē-ə)   
An abnormal rhythm of the heart, often detectable on an electrocardiogram. Electrical impulses in the heart normally originate in the sinoatrial node of the right atrium during diastole and are transmitted through the atrioventricular node to the ventricles, causing the muscle contraction that usually occurs during systole. However, abnormalities of electrical conduction during diastole or systole can result in various alterations of the heartbeat, such as changes in heart rate, skipped or irregular beats, and fibrillation of the heart muscle, which can be life threatening. These electrical disturbances can be caused by metabolic abnormalities, inadequate blood supply (as in coronary artery disease), drug effects, chronic disease, and other factors. Arrhythmias are sometimes treated with the implantation of a pacemaker.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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