atrioventricular node

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Related to AV node: bundle of His, SA node, Purkinje fibers, Purkinje fibres

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 ?
Because of this rapid, disorganized beating, electrical impulses are only making it through the AV node and down to the ventricles every so often and with irregular timing.
Termination of an arrhythmia by adenosine is essentially diagnostic of a re-entrant arrhythmia that uses the AV node as an essential part of the circuit (AVN reentrant tachycardia, AV reciprocating tachycardia).
It is well-established now that the PR interval is mainly dependent on the slow action potentials elicited on the AV node (Prystowsky, 1988; Golovko and Tipans, 1986; Brown et al.
Pathologic Diagnosis: Primary Cardiac Cavernous Hemangioma in the AV Node Causing Sudden Cardiac Death
It is important to observe that the correlation was different for every substrate targeted, being the worst for the AV node reentry tachycardia (r =0.
Wenckebach periodicity is almost always seen at the level of the AV node.
And finally in August, we submitted to the FDA the results of the Post AV Node Ablation Evaluation (PAVE) study, which evaluates bi-ventricular pacing for patients with A-V nodal ablation.
The bradycardic effect of ATP, in particular its blockade of atrio-ventricular (AV) nodal conduction, has been shown in multiple published clinical studies to safely and effectively terminate re-entrant PSVT involving the AV node.
The AV node conducts the ventricular-paced beat or a premature ventricular contraction (PVC) back (ie, retrograde) to the atrium and depolarizes the atrium before the next atrial-paced beat, the impulse can then trigger the pacemaker to repeatedly pace the ventricle, thereby generating a reentrant arrhythmia circuit known as PMT or endless-loop tachycardia.
NYSE:STJ) announced today it has reached minimum enrollment requirements for its large multicenter Cardiac Resynchronization Therapy Post AV Node Ablation Evaluation or PAVE study.
Mapping during ventricular pacing confirmed retrograde decremental conduction through the AV node and no retrograde conduction was identified through the AP.