Arrhythmia

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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

(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

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.

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]
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