Artifacts in pulse transit time measurements using standard patient monitoring equipment.
Frank C BennisCarola van PulJarno J L van den BogaartPeter AndriessenBoris W KramerTammo DelhaasPublished in: PloS one (2019)
Post-processing of the PPG signal in the Masimo module of the Philips patient monitor introduces a sawtooth in PPG and derived PTT. This sawtooth, together with a large module-dependent absolute difference in PTT, renders the thus-derived PTT insufficient for clinical purposes.
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