Atrioventricular conduction is continuously electrical in nature, with the slowest conduction velocity (0.05 m/sec) occurring between the atrium and the A-V node.
This foundational study demonstrates that atrioventricular conduction is purely electrical in nature, identifying the region between the atrium and AV node as having the slowest conduction velocity.
Potentials recorded at various sites in the atrioventricular (A-V) conduction system indicate that conduction is continuously electrical in nature and involves no synapse-like (i.e., chemical) conduction. The region between atrium and atrioventricular node has the slowest conduction velocity (.05 M./sec.) and lowest safety factor. Conduction through the A-V node is at about .12 M./sec. Results demonstrate shapes of potentials recorded extracellularly at various sites within the A-V node, first degree and complete block during rapid atrial stimulation, and echo-like phenomena.
Scher et al. (Thu,) conducted a other in Atrioventricular conduction. Electrophysiological recording was evaluated on Conduction velocity and mechanism. Atrioventricular conduction is continuously electrical in nature, with the slowest conduction velocity (0.05 m/sec) occurring between the atrium and the A-V node.