Patent ID: 9585580
Date: 2017-03-07
CPC Classifications: A61B,G16H

Claim:
1. An apparatus comprising: a signal interface for receiving a first signal indicative of electromagnetic cardiac activity and a second signal indicative of cardiovascular motion, and a processing device coupled to the signal interface, the processing device being arranged and configured to: extract from the first signal a first wave pattern repeating on a heart-beat rate and from the second signal a second wave pattern repeating on the heart-beat rate, form timing data, each timing value of which being indicative of a time period from a reference point of the first wave pattern belonging to one heart-beat period to a reference point of the second wave pattern belonging to the same heart-beat period, determine a correlation between the timing data and pacing data indicative of the heart-beat rate, produce, on the basis of the correlation, a third signal indicative of cardiac malfunction and abnormality, and make the third signal available to a user external to the processing device, wherein the processing device is configured to compute a correlation coefficient indicative of the degree of the correlation between the timing data and the pacing data: where C(j) is the correlation coefficient, E is the expected value operator, TD is the timing data, μ