Population
Isolated right atria of the rabbit heart
Design
Preclinical
Authors
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Warrants no change in clinical sinus node management; leaves open whether tissue architecture dominates human pacemaking.
The study demonstrates that the dominant pacemaker in the rabbit sinus node consists of a central group of cells, with excitation propagating preferentially due to tissue architecture rather than specific conduction pathways.
Bleeker et al. (1980) studied this question.
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