Patent ID: 8666483

Claim:
A system for monitoring atrial fibrillation comprising: a data acquisition processor for acquiring a cardiac signal data stream from a patient; a wave detector for detecting an R-wave in a cardiac signal of the data stream, said wave detector detecting a T-wave in the cardiac signal occurring after the detected R-wave and a Q point in a successive subsequent cardiac signal of the data stream; a filter for signal gating and extraction of data representing a Region of Interest (ROI) time window from substantially the end of the detected T-wave to the detected successive subsequent Q point; an integration processor for detecting characteristics of a P wave signal occurring within the ROI time window, comparing a latency of the P wave comprising a time duration within the ROI time window that the P wave occurs relative to both the T-wave and the Q-wave within the ROT time window, to corresponding characteristics derived from data representing at least one P wave signal and generating an output signal in response to the comparison for use in determining if the patient is in atrial fibrillation.