title: Accuracy and precision of fourteen pulse oximeters.
abstract: Two sets of seven pulse oximeters (Criticare CSI-502; Nellcor-N200; Datex-Satlite; Physio-Control-Lifestat 1600; Critikon-Oxyshuttle; Ohmeda-Biox 3700; Ohmeda-Biox 3740; Radiometer-Oxi; Spectramed-Pulsat; Kontron-7840; Biochem-Ox2000; Invivo-4500; Engström-EOS; Novametrix-505) were studied in two groups of eight healthy subjects, aged 26-50 yrs. The transcutaneous oxygen saturation (SpO2) was compared with arterial oxygen saturation (SaO2) measured in simultaneously with drawn blood samples (OSM2 Radiometer) at four 20 min steady-state levels of inspired oxygen fraction (FIO2) (0.21, 0.10, 0.08 and 0.07; SaO2 99-55%) in a conditioned chamber. Both the error in accuracy (mean SpO2-SaO2 difference), and the error in precision (SD of the differences) remained less than 3% for the two highest FIO2 levels (SaO2 greater than 83%) but, during deeper hypoxia, they were increased to 8% and 5%, respectively. An instrumental systematic bias affected accuracy in particular. We concluded that a good agreement between SpO2 and SaO2, as reflected by the Bartko's intraclass coefficient, was observed in nine instruments.
authors.affiliation: INSERM Unité 14, CO 10, Vandoeuvre-lès-Nancy, France.
authors.forename: B
authors.initials: B
authors.lastname: Hannhart
authors.forename: J P
authors.initials: JP
authors.lastname: Haberer
authors.forename: C
authors.initials: C
authors.lastname: Saunier
authors.forename: M C
authors.initials: MC
authors.lastname: Laxenaire
mesh_terms: D000328:Adult; D006801:Humans; D000860:Hypoxia / Q000175:diagnosis; D008875:Middle Aged; D010092:Oximetry / Q000295:instrumentation* / Q000592:standards