2012
Modulation of finger photoplethysmographic traces during forced respiration: Venous blood in motion?
Phillips J, Belhaj A, Shafqat K, Langford R, Shelley K, Kyriacou P. Modulation of finger photoplethysmographic traces during forced respiration: Venous blood in motion? Annual International Conference Of The IEEE Engineering In Medicine And Biology Society (EMBC) 2012, 2012: 3644-3647. PMID: 23366717, DOI: 10.1109/embc.2012.6346756.Peer-Reviewed Original ResearchConceptsVenous oxygen saturationOxygen saturationBlood volumeNegative airway pressureAirway pressureVenous bloodArterial saturationRespiratory modulationHealthy volunteersRespiratory frequencyTissue bedsPilot studyResultant modulationArteryModulationFingerBloodPhotoplethysmographic signalsVolunteers
2010
Measuring venous oxygenation using the photoplethysmograph waveform
Walton ZD, Kyriacou PA, Silverman DG, Shelley KH. Measuring venous oxygenation using the photoplethysmograph waveform. Journal Of Clinical Monitoring And Computing 2010, 24: 295-303. PMID: 20644985, DOI: 10.1007/s10877-010-9248-y.Peer-Reviewed Original ResearchConceptsVenous saturationVenous systemRegional venous oxygen saturationPeripheral venous waveformCardiac surgery patientsVenous oxygen saturationPeripheral venous systemPhotoplethysmograph waveformsWilcoxon signed-rank testVenous waveformSurgery patientsAtrial contractionSigned-rank testVenous bloodVenous oxygenationOxygen saturationGold standardPPG characteristicsHigh complianceBonferroni correctionSignificant differencesPPG analysisBloodPPG waveformPatients