cardiac arrhythmia

cardiac arrhythmia

n.

See cardiac dysrhythmia.

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Cardiac arrhythmia

An irregular heart rate or rhythm.

Mentioned in: Holter Monitoring, Stress Test

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cardiac arrhythmia

Etymology: Gk, kardia + a + rhythmos, without rhythm

an abnormal cardiac rate or rhythm. The condition is caused by a failure of the sinus node to maintain its pacemaker function or by a defect in the electrical conduction system. Examples of arrhythmia include bradycardia, ectopic beat, heart block, and tachycardia.

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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.

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cardiac arrhythmia

Cardiology Any defect in the heart's electrical activity, which may be detectable only by EKG, or manifest as an abnormality in rate, rhythm, or sequence of cardiac events Clinical From asymptomatic to palpitations, syncope, etc