Patent ID: 9693704
Date: 2017-07-04
CPC Classifications: A61B

Claim:
1. A method comprising: recording a plurality of electrocardiographic signals of a subject to generate at least one ECG (electrocardiogram) of the subject; computing an RMS (root-mean-square) magnitude function from the recorded electrocardiographic signals; and computing estimates of one or more RMS variables that contain information about a cardiac condition of the subject with fiducial marks from the RMS magnitude function providing, on a beat by beat basis, estimates of: a mean ventricular depolarization time, a mean ventricular repolarization time, a mean ventricular action potential duration, and a range of the depolarization time and the repolarization time; wherein a mathermatical formulation of the RMS magnitude function comprises: where E RMS (t) represents the RMS magnitude function at a time t; and e i (t) represents the i-th eletrocardiographic signal recorded at the time t.