Abstract
The implantable cardiac pacemaker is one of the most important medical innovations of the twentieth century. Yet until recently, researchers have not understood the basic mechanisms governing how a pacemaker excites the heart. The development of a mathematical model describing the electrical properties of cardiac tissue—the bidomain model—helped unravel these mechanisms. This chapter outlines several important predictions of the bidomain model related to pacemakers, including make and break excitation, the shape of the strength-interval curve, the no-response phenomenon, the effect of potassium on pacing, the time dependence of the refractory period, and burst pacing.
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This research was supported by the National Institutes of Health and the American Heart Association.
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Janks, D.L., Roth, B.J. (2021). The Bidomain Theory of Stimulation. In: Efimov, I.R., Ng, F.S., Laughner, J.I. (eds) Cardiac Bioelectric Therapy. Springer, Cham. https://doi.org/10.1007/978-3-030-63355-4_5
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DOI: https://doi.org/10.1007/978-3-030-63355-4_5
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