Cardiac rhythm monitoring

Abstract

Methods include obtaining measurements of electrical activity of a heart, organizing the measurements into one group with values within a first range and a second group with values within a second range, and associating the first group with a first incidence of fibrillation and the second group with a second incidence of fibrillation in the heart. The values may comprise cycle lengths or median cycle lengths. Methods may include grouping the measurements by the median cycle lengths and a second value such as a direction of propagation. The first incidence of atrial fibrillation may comprise electrical electrophysiological activity resulting from a first focal origin or multiple reentrant circuit and the second incidence of atrial fibrillation may comprise electrophysiological activity resulting from a second focal origin or multiple reentrant circuit, potentially independent from the first focal origin or multiple reentrant circuit.

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