Method and system for measuring heart rate variability

摘要

A system for measuring heart rate variability (HRV) of a patient, said system comprising: recording means for obtaining and recording heartbeat-to-heartbeat intervals for a predetermined period of time; processing means for digitizing said intervals, forming a recurrence plot, and assigning a unit mass to each point on the plot representing a measured interval, and calculating the determinant by the expression Qdet = Qxx Qyy wherein: Qxx is the quadrupole moment relative to the X axis of the principal coordinate, Qyy is the quadrupole moment relative to the Y axis of the principal coordinate; and Qdet is the product of Qxx and Qyy. <IMAGE>