Electrode-skin contact quality assessment

摘要

A method of identifying poor electrical contact between a patients skin and the electrodes of a patch used for real-time monitoring of a time-varying physiological signal such as an ECG. The method comprises extracting features from a physiological signal that can be used to classify a time portion of the monitored time-varying physiological signal for the purpose of providing estimated probabilities that poor electrical contact exists between the patients skin and the electrodes. The method further requires receiving the monitored time-varying physiological signal and, for each sequential time portion, determining a value for each feature. Past and present feature values are then used to sequentially update a probability model to determine the likely cause of the artefacts. A notification is further provided when one or more of said probabilities is above a pre-determined threshold.