conduction

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Related to AV 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.

con·duc·tion

(kon-dŭk'shŭn),
1. The act of transmitting or conveying certain forms of energy, such as heat, sound, or electricity, from one point to another, without evident movement in the conducting body.
2. The transmission of stimuli of various sorts by living protoplasm.
[L. con- duco, pp. ductus, to lead, conduct]

conduction

Cardiac pacing The passage of an electrical charge; the active propagation of a depolarization wave in the heart Physiology The transmission of nerve impulses. See Retrograde conduction.

con·duc·tion

(kŏn-dŭk'shŭn)
1. The act of transmitting or conveying certain forms of energy, such as heat, sound, or electricity, from one point to another, without evident movement in the conducting body.
2. The transmission of stimuli of various sorts by living protoplasm.
3. The process by which a nerve impulse is transmitted.
[L. con-duco, pp. ductus, to lead, conduct]

conduction

the transmission of an electrical current by a conductor.

con·duc·tion

(kŏn-dŭk'shŭn)
Transmitting or conveying energy, from one point to another, without evident movement in conducting body.
[L. con-duco, pp. ductus, to lead, conduct]
References in periodicals archive ?
It is a prospective and comparative cohort study; 72 Patients admitted in RLJH out of which 36 are AV conduction blocks and 36 are intraventricular conduction blocks with acute myocardial infarction; 7 days follow up is done to assess the prognosis of AV blocks versus intraventricular conduction blocks in acute myocardial infarction.
Six years after the paper of Pick et al, Moe and colleagues wrote a seminal paper demonstrating that in most, if not all, published cases of supernormality of AV conduction alternative mechanisms could explain the observed phenomena.
At low micromolar concentrations of BPA (10 [micro]M), we observed a concentration-dependent slowing of AV conduction that began within 15 min of exposure (Table 1).
Furthermore, recent studies showed that fMCG can be effectively used in the prenatal diagnosis of atrial bigeminy (conducted and blocked), 2:1 AVB, CAVB, delayed AV conduction, PQ segment prolongation, and different types of long QT syndrome.[32],[33],[34],[35]
The P-R interval is frequently prolonged as a result of slow AV conduction. The P waves are usually not seen when serum potassium level exceeds 8.0mEq/L but QRS complexes are seen (Sine-wave appearance Fig.
Six years after the paper of Pick et al, (1) Moe and colleagues wrote a seminal paper demonstrating that in most, if not all, published cases of supernormality of AV conduction alternative mechanisms could explain the observed phenomena.
Radiofrequency energy was terminated immediately in the event of impedance rise, displacement of the catheter, an increase in PR interval, occurrence of AV conduction block, accelerated JR with cycle length shorter than 450 ms or JR without ventriculoatrial conduction.
[sup][13] reported ASD closure procedure as a predisposing factor for supraventricular ectopic rhythm, in addition to AV conduction abnormality, the possible mechanisms of which might involve that occluder disc posed a pressure on AV node, resulting in the friction and temporary swelling of AV node and the surrounding tissues, which subsequently led to AV node dysfunction or decrease in function.
The management of Tdp is initially aimed at correcting the underlying cause and a bolus of 2g magnesium sulphate as emergency cellular membrane stabilizing treatment Further therapy preferentially includes overdrive atrial pacing if AV conduction is intact, before ventricular pacing.
Digoxin also activates the parasympathetic nervous system, which slows the sinus node and inhibits AV conduction. (7-9)
However, complete atrioventricular (AV) block or other AV conduction defects, although being a rare entity in thyrotoxicosis, is an important condition which should be recognized (1).