Key result
Cervical vagus nerve stimulation in dogs synchronizes junctional pacemaker cells based on R-st intervals.
Population
9 open-chest dogs with stable atrioventricular junctional rhythm produced by injecting pentobarbital into…
Design
Preclinical
Authors
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Timing-specific vagal effects on junctional pacemakers in dogs require human validation; leaves open cycle-targeted neuromodulation strategies.
In a canine model, the chronotropic response of the AV junction to vagal stimulation depends critically on the timing of the stimuli within the cardiac cycle.
Wallick et al. (1979) studied Stable atrioventricular junctional rhythm (n=9). Repetitive cervical vagus nerve stimulation was evaluated on Mean heart periods (AV junctional rate). Repetitive cervical vagus nerve stimulation in dogs synchronized junctional pacemaker cells, with mean heart periods varying from 1,815 ms to 1,160 ms depending on the R-st interval.
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