Key result
An atrial pacing model of functional 2:1 block demonstrated that the AVN effective refractory period alternated with a mean beat-to-beat difference of at least 100 msec.
Why the study?
Does concealed conduction modulate atrioventricular nodal excitability during functional 2:1 block in humans?
Does concealed conduction modulate atrioventricular nodal excitability during functional 2:1 block in humans?
Concealed conduction by blocked beats significantly modulates atrioventricular nodal excitability and refractoriness during functional 2:1 block in humans.
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Concealed conduction may modulate AVN refractoriness in functional 2:1 block; leaves open clinical relevance pending larger studies.
Steinman et al. (1987) studied functional 2:1 block (n=10). Atrial pacing model of functional 2:1 block vs. Control method V (1:1 conduction) was evaluated on Atrioventricular nodal (AVN) conduction and refractoriness. An atrial pacing model of functional 2:1 block demonstrated that the AVN effective refractory period alternated with a mean beat-to-beat difference of at least 100 msec.
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