A method and system for detecting effort events is disclosed. Effort may be determined through feature analysis of the signal as transformed by a continuous wavelet transform, which may be compared against a reference effort measure to trigger an effort event flag that signals the onset and/or severity of an effort event. For example, a respiratory effort measure may be determined based at least in part on a wavelet transform of a photoplethysmograph (PPG) signal and features of the transformed signal. A respiratory reference effort measure may be based at least in part on past values of the respiratory effort measure, and a threshold test may be used to trigger an effort event flag, which may indicate a marked change in respiratory effort exerted by a patient.
申请公布号
WO2011001134(A1)
申请公布日期
2011.01.06
申请号
WO2010GB01194
申请日期
2010.06.18
申请人
NELLCOR PURITAN BENNETT IRELAND;ADDISON, PAUL, STANLEY;WATSON, JAMES, N.;CASSIDY, ANDREW
发明人
ADDISON, PAUL, STANLEY;WATSON, JAMES, N.;CASSIDY, ANDREW