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.

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).

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.
References in periodicals archive ?
Autosomal dominant dilated cardiomyopathy with conduction system disease * Autosomal dominant and recessive Emery Dreifuss Muscular Dystrophy * Limb girdle muscular dystrophy type 1B with atrioventricular conduction disturbances * Autosomal recessive type 2 Charcot Marie Tooth * Mandibuloacral dysplasia * Dunnigan-type familial partial lypodystrophy * Generalized lipoatrophy, insulin-resistant diabetes, leukomelanodermic papules, liver steatosis and cardiomyopathy * Hutchinson-Gilford progeria syndrome * Atypical Werner syndrome * Restrictive Dermopathy
9% spontaneous atrioventricular conduction ensured in 80 percent of dual-chamber pacemaker patients
Only one patient developed transient complete atrioventricular conduction block whereas 14 patients were classified as severe arrhythmia including transient CAVB in one, CLBBB in 11, CRBBB accompanied with LABBB in one, and VT in one patient.
have shown that 63% of patients with CHB after surgery regained atrioventricular conduction in the first post-operative month; in the majority (97%) this occurred in the first 9 days after surgery33.
The author has organized the twenty-nine chapters that make up the main body of his text in seven parts devoted to the basic tools in the evaluation of cardiac patients, special tools used in cardiac evaluation, congenital heart defects, acquired heart diseases, arrhythmias and atrioventricular conduction diseases, special problems, and cardiac surgery patients.
Thus, there appears to be only a short window of time soon after junction-initiated QRSs when atrioventricular conduction can occur.
Anaesthetic drugs tend to change the electrophysiology of the atrioventricular conduction system and hence they tend to affect the behavior of the patient under anaesthesia.
Basing on progressive deterioration of the left ventricular function, progression of atrioventricular conduction disturbances and on the occurrence of ventricular tachyarrhythmia, Said et al.
We report, to the best of our knowledge, the first case of cardiac hydatidosis from Pakistan in a 30 year old male who presented with recurrent syncopal episodes due to complete atrioventricular conduction block and subsequently underwent implantation of dual chamber pacemaker.
However, she had ongoing episodes of palpitations which were attributed to paroxysmal atrial tachycardia/atrial fibrillation with atrioventricular conduction, rather than pacemaker-mediated tachycardia.
Because it favors intrinsic atrioventricular conduction in all situations, AAIsafeR pacing mode has the potential to become a gold-standard therapy for the vast majority of dual-chamber pacemaker and ICD patients," concluded Dr.

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