METHOD AND DEVICE FOR DETECTING STRESS USING BEAT-TO-BEAT ECG FEATURES

摘要

Method and device for on-line detecting stress using individual heart beat ECG features of data acquired from a subject, comprising: obtaining a data sample of each heart beat individually from the acquired data; calculating the fiducial features RR, QR, RT, STinterval, STc, QTinterval, QTc, ST and QRS from each said data sample; classifying each data sample as stressed or not-stressed, using a pretrained classifier which was previously trained using the fiducial heart beat features RR, QR, RT, STinterval, STc, QTinterval, QTc, ST and QRS from previously acquired reference data samples from individual heart beats, determining stress as detected when at least one data sample is classified as stressed. Stress can be determined as detected when one data sample is classified as stressed over a time duration of: only one heart beat and the RR distance between said one heart beat and the previous heart beat.