atrioventricular conduction


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Related to atrioventricular conduction: atrioventricular node, AV delay

conduction

 [kon-duk´shun]
conveyance of energy, as of heat, sound, or electricity.
aberrant ventricular conduction the temporary abnormal intraventricular conduction of supraventricular impulses; called also ventricular aberration.
aerial conduction (air conduction) conduction of sound waves to the organ of hearing in the inner ear through the air.
anterograde conduction
1. forward conduction of impulses through a nerve.
2. in the heart, conduction of impulses from atria to ventricles.
atrioventricular conduction (AV conduction) the conduction of atrial impulses through the atrioventricular node and the His-Purkinje system to the ventricles.
bone conduction conduction of sound waves to the inner ear through the bones of the skull.
concealed conduction conduction that is not seen on the surface electrocardiogram but may be detected by its effect on subsequent impulses; common examples are the incomplete penetration of the AV junction during atrial fibrillation, the Wenckebach type penetration during atrial flutter, and the retrograde incomplete penetration following ventricular ectopic beats.
decremental conduction a gradual decrease in the stimuli and response along a pathway of conduction; it occurs in nerve fibers with reduced membrane potentials.
retrograde conduction transmission of a cardiac impulse backward in the ventricular to atrial direction; particularly, conduction from the atrioventricular node into the atria.
saltatory conduction the rapid passage of an electric potential between the nodes of ranvier in myelinated nerve fibers, rather than along the full length of the membrane.
Miller-Keane Encyclopedia and Dictionary of Medicine, Nursing, and Allied Health, Seventh Edition. © 2003 by Saunders, an imprint of Elsevier, Inc. All rights reserved.

a·tri·o·ven·tric·u·lar con·duc·tion (AVC),

, AV conduction
forward conduction of the cardiac impulse from atria to ventricles via the AV node or any bypass tract, represented in the electrocardiogram by the PR interval. PH conduction time is from the onset of the P wave to the first high-frequency component of the His bundle electrogram (normally 119 ± 38 msec); A-H conduction time is from the onset of the first high-frequency component of the atrial electrogram to the first high-frequency component of the His bundle electrogram (normally 92 ± 38 msec); P-A conduction time is from the onset of the P wave to the onset of the atrial electrogram (normally 27 ± 18 msec).
Farlex Partner Medical Dictionary © Farlex 2012

atrioventricular conduction

n.
Forward conduction of the cardiac impulse from the atria to ventricles via the atrioventricular node, represented in an electrocardiogram by the P-R interval.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.
References in periodicals archive ?
[5] Of these, 27 (67%) returned to atrioventricular conduction within 7 days of admission, 11 (28%) required permanent pacing owing to persistent atrioventricular blockage, while 2 (5%) passed away.
Atrioventricular conduction abnormality and hyperchloremic metabolic acidosis in toluene sniffing.
We found a dissociation atrioventricular conduction in retrograde.
Clark, "Bradydysrhythmias and atrioventricular conduction blocks," Emergency Medicine Clinics of North America, vol.
The influence of parasympathetic tone is further supported by clinical electrophysiological studies revealing no evidence for advanced sinus node disease or atrioventricular conduction system dysfunction, which suggest that prolonged ventricular asystole during OSA is not due to fixed or anatomic disease of the sinus node or the atrioventricular conduction system [44].
Neostigmine may interfere with atrioventricular conduction even without high doses.
Reversal of sinus arrest and atrioventricular conduction block in patients with Sleep Apnea during Nasal continuous positive pressure.
The infringements of atrioventricular conduction in our research did not occur in early follow-up, neither did it occur during the extended follow-up.
Late recovery of atrioventricular conduction after pacemaker implantation for complete heart block associated with surgery for congenital heart disease.
burgdorferi in the cerebrospinal fluid than in serum); or 6) acute onset of second- or third-degree atrioventricular conduction defects that resolve in days to weeks and are occasionally associated with myocarditis.
Identification of mutations in the gene encoding lamins A/C in autosomal dominant limb girdle muscular dystrophy with atrioventricular conduction disturbances (LGMD 1 B).

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