Short time constant for rate-dependent changes of atrioventricular conduction in dogs.


The number of short cardiac cycles necessary to induce, and normal cycles to dissipate, a rate-dependent shortening in atrioventricular (AV) nodal functional refractory period (FRP) and conduction time (CT) was determined in six anesthetized dogs. For the induction study, the periodic premature stimulation procedure was performed at control and repeated six… (More)


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