SYSTEM AND METHOD TO DETECT SIGNIFICANT ARRHYTHMIC EVENTS THROUGH A PHOTOPLETHYSMOGRAM (PPG) AND ACCELEROMETER

摘要

A medical system (10) and method detect arrhythmic events. The medical system (10) includes at least one processor (28, 34, 50) programmed to perform the method. A photoplethysmogram (PPG) signal generated using a PPG probe (12) positioned on or within a patient (14) and a pulse signal generated using an accelerometer (38) positioned on or within the patient (14) received. Features from the PPG signal are extracted to PPG feature vectors, and features are extracted from the pulse signal to pulse feature vectors. The PPG feature vectors are correlated with the pulse feature vectors, and correlated PPG feature vectors and correlated pulse feature vectors are evaluated to detect arrhythmic events.

主权项

1. A medical system for detecting arrhythmic events, said system comprising:
at least one processor programmed to:
receive a photoplethysmogram (PPG) signal generated using a PPG probe positioned on or within a patient;receive a pulse signal generated using an accelerometer positioned cm or within the patient;extract features from the PPG signal to generate feature vectors;extract features from the pulse signal to generate pulse feature vectors;correlate the PPG feature vectors with the pulse feature vectors; andevaluate correlated PPG feature vectors and correlated pulse feature vectors to detect arrhythmic events;wherein features extracted from the PPG signal include inter pulse intervals (IPIs) for pairs of adjacent pulses of a last predetermined number of pulses; andwherein features extracted from the pulse signal include inter pulse intervals (IPIs) for pairs of adjacent pulses of a last predetermined number of pulses.