2018
Using support vector machines on photoplethysmographic signals to discriminate between hypovolemia and euvolemia
Reljin N, Zimmer G, Malyuta Y, Shelley K, Mendelson Y, Blehar DJ, Darling CE, Chon KH. Using support vector machines on photoplethysmographic signals to discriminate between hypovolemia and euvolemia. PLOS ONE 2018, 13: e0195087. PMID: 29596477, PMCID: PMC5875841, DOI: 10.1371/journal.pone.0195087.Peer-Reviewed Original ResearchConceptsBlood lossTrauma patientsTraditional vital signsLast time pointBlood pressureHemorrhagic shockCombat casualty careBlood withdrawalHealthy volunteersPhotoplethysmographic recordingsHeart rateBlood volumeEuvolemiaVital signsHypovolemiaPercentage changeTime pointsAbsolute changeCasualty carePatientsBattlefield settingsEarly stagesHemorrhageRecordingsHospital
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 signalsVolunteersUsing Time-Frequency Analysis of the Photoplethysmographic Waveform to Detect the Withdrawal of 900 mL of Blood
Scully CG, Selvaraj N, Romberg FW, Wardhan R, Ryan J, Florian JP, Silverman DG, Shelley KH, Chon KH. Using Time-Frequency Analysis of the Photoplethysmographic Waveform to Detect the Withdrawal of 900 mL of Blood. Anesthesia & Analgesia 2012, 115: 74-81. PMID: 22543068, DOI: 10.1213/ane.0b013e318256486c.Peer-Reviewed Original ResearchMeSH KeywordsAdultBlood PressureBlood Pressure DeterminationBlood Transfusion, AutologousBlood VolumeBlood Volume DeterminationCluster AnalysisConnecticutElectrocardiographyHeart RateHumansHypovolemiaInfrared RaysMalePhotoplethysmographyPredictive Value of TestsRespiratory MechanicsSensitivity and SpecificitySignal Processing, Computer-AssistedTime FactorsConceptsML of bloodArterial blood pressureBlood lossBlood pressureHeart rateHeart rate frequencyBlood withdrawalML blood lossMean percent decreaseBlood volume lossHeart rate componentSignificant changesPhotoplethysmographic waveformSpontaneous breathingTrauma settingCuff measurementsPPG waveformBlood reinfusionHealthy volunteersStandard electrocardiogramBloodEarly detectionEar PPG signalsBaselineConfidence intervals
2006
What Is the Best Site for Measuring the Effect of Ventilation on the Pulse Oximeter Waveform?
Shelley KH, Jablonka DH, Awad AA, Stout RG, Rezkanna H, Silverman DG. What Is the Best Site for Measuring the Effect of Ventilation on the Pulse Oximeter Waveform? Anesthesia & Analgesia 2006, 103: 372-377. PMID: 16861419, DOI: 10.1213/01.ane.0000222477.67637.17.Peer-Reviewed Original ResearchConceptsPositive pressure ventilationPulse oximeter waveformPressure ventilationPlethysmographic waveformEffect of ventilationBlood lossRenal dialysisSpontaneous breathingPlethysmographic dataSurgical proceduresTidal volumeBlood volumeRespiratory rateVentilationPatientsSignificant correlationRespiratory signalPredominant featureImpact of ventilationCardiac pulseSurgeryFingerBreathingDialysis
2001
Different Responses of Ear and Finger Pulse Oximeter Wave Form to Cold Pressor Test
Awad A, Ghobashy M, Ouda W, Stout R, Silverman D, Shelley K. Different Responses of Ear and Finger Pulse Oximeter Wave Form to Cold Pressor Test. Anesthesia & Analgesia 2001, 92: 1483-1486. PMID: 11375830, DOI: 10.1097/00000539-200106000-00026.Peer-Reviewed Original ResearchConceptsCold pressor testVasoconstrictive responsePressor testIce water immersionPlethysmographic amplitudeVasoconstrictive effectSympathetic toneContralateral handHealthy volunteersSystemic circulationIRB approvalCold stimuliClinical settingEarSignificant disparitiesSignificant changesSuitable monitorFingerResponseEar signalsWater immersionPlethysmography
1993
The detection of peripheral venous pulsation using the pulse oximeter as a plethysmograph
Shelley K, Dickstein M, Shulman S. The detection of peripheral venous pulsation using the pulse oximeter as a plethysmograph. Journal Of Clinical Monitoring 1993, 9: 283-287. PMID: 8301336, DOI: 10.1007/bf02886699.Peer-Reviewed Original Research