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arrhythmia |
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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 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 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 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 ( n a variation from the normal rhythm of the heart. arrhythmia variation from the normal rhythm, especially of the heartbeat. See also bradycardia, tachycardia. 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 ventricular a's 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. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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The same muscle damage can also interfere with the conduction of electrical impulses through the heart, thereby increasing the chance that a subsequent life-threatening arrhythmia will occur. The intracardiac electrograms for each ICD-detected arrhythmia were reviewed by an electrophysiologist (M. DIED: Phillip Horvilz, 44, a Hew York-based gay performance artist and choreographer, of cardiac arrhythmia while flying to California, March 30. |
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