授乳後の背中さすりで新生児の脈波に混入したアーチファクトの回転マトリクス法および分離マトリクス法による分離

摘要

AbstractMany kinds of artifacts may interfere in vital signals, especially in the case of neonatal signal measurement because of unpredictable motion. We observed neonatal Sp02 pulse wave data with high-amplitudeartifact by stroking its back after nursing. The frequency of this artifact was around 1.35 Hz. This frequency waswithin the range of pulse oximeter band-pass filter (0.5-5 Hz). We could not narrow the range of the filter bandbecause of the possibility of losing the pulse wave frequency. In this study, we tried the time domain processingrotation matrix and separation matrix. We could obtain good pulse waves separated from artifact.