Method and Apparatus for Distinguishing Between Clinically Significant Changes and Artifacts in Patient Physiological Information

摘要

A patient physiological information monitoring system includes a plurality of patient monitoring devices ( 6 ) and a physiological information analyzer ( 2 ). The plurality of patient monitoring devices ( 6 ) monitor physiological information from a patient and generate corresponding physiological signals. The physiological information analyzer ( 2 ) processes the monitored physiological information and determines whether a physiological change is a clinically significant event or an artifact. The physiological information analyzer includes at least one receiver ( 4 ) that receives the physiological signals from the patient monitoring devices; a signal correlator ( 10 ) that generates morphograms from pairs of the received physiological signals; a signature generator ( 12 ) that applies a wavelet decomposition to each morphogram to compute a signature for each morphogram; and a decision component ( 14 ) that compares the morphogram signatures within and across sampling intervals and determines if a physiological change is a clinically significant change or an artifact.