atrioventricular node


Also found in: Dictionary, Thesaurus, Medical, Acronyms, Wikipedia.

atrioventricular node

[¦ā·trē·o‚ven¦trik·yə·lər ′nōd]
(anatomy)
A group of slow-conducting fibers in the atrium of the vertebrate heart that are stimulated by impulses originating in the sinoatrial node and conduct impulses to the bundle of His.
References in periodicals archive ?
Cystic tumor of the atrioventricular node of the heart appears to be the heart equivalent of the solid cell nests (ultimobranchial rests) ofthe thyroid.
Last month, the Food and Drug Administration approved the Freezor Cryoablation System specifically for treatment of atrioventricular node reentry tachycardia (AVNRT).
Papillary fibroelastoma of the aortic valve coincident with a cystic tumor of the atrioventricular node [abstract].
In addition, some researchers suggested that patients with a PLSVC may become symptomatic due to arrhythmias through stretching of the atrioventricular node or His bundle by the dilated coronary sinus.
Accelerated junctional rhythm may arise in atrial tissue proximal to the atrioventricular node, in the atrioventricular node itself, or in the His bundle and is the result of enhanced automaticity.
With the exception of endodermal heterotopia of the atrioventricular node, primary cardiac tumors rarely cause sudden death.
The part of the conduction system with the second longest refractory period is the atrioventricular node.

Full browser ?