atrioventricular nodal reentrant tachycardia

atrioventricular nodal reentrant tachycardia

AVNRT Cardiology The most common form of paroxysmal SVT Treatment Antiarrhythmics are rarely successful; catheter ablation of the fast P wave causes complete heart block in 10%, requiring pacemaker placement; selective catheter ablation of the atrial end of the slow PW using radiofrequency current may eliminate AVNRT with little risk of AV block. See Supraventricular tachycardia.

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

atrioventricular nodal reentrant tachycardia

Abbreviation: AVNRT

The most common supraventricular tachycardia, resulting from abnormal conduction of electrical impulses through a self-sustaining circuit in the atrioventricular node. It occurs more often in women than in men, often in their twenties. The heart rate is usually between 150 and 250 bpm.

Synonym: junctional reciprocating tachycardia See: re-entry

See also: tachycardia

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