Range of accuracy of two wavelength oximetry.

  title={Range of accuracy of two wavelength oximetry.},
  author={Kenneth R Chapman and F. L. W. Liu and R. M. Watson and A. S. Rebuck},
  volume={89 4},
Earlier reports of a two wavelength oximeter suggested a tendency toward overestimation of arterial oxygen saturation (SaO2) at the lowest values examined. To investigate this possible inaccuracy, we compared oximeter readings to SaO2 over a wider range of laboratory-induced steady-state hypoxia than has previously been reported. For values of SaO2 greater than 75 percent, oximeter readings were linearly related to SaO2 such that y = 0.94 SaO2 + 8.7 (r = 0.96) and the mean difference between… CONTINUE READING

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