RADIOMETER ABL90 FLEX - Residual Spectrum

5. Sensors and optical system ABL90 FLEX reference manual
5-46
The measured spectrum is compared to a model spectrum calculated from the
determined concentrations. The difference between these two spectra is called
the residual spectrum. If this residual spectrum is too high, the oximetry module
parameters
ctHb, sO
2
, FO
2
Hb, FCOHb, FMetHb, FHHb, FHbF and ctBil will be
flagged with a warning.
In addition, a warning will accompany the results if any of the following
conditions exist:
 ctHb < 0.1 mmol/L or ctHb > 25 mmol/L
 FHb(deriv) < –2 % or FHb(deriv) > 102 %
where
FHb(deriv) is defined as sO
2
, FO
2
Hb, FCOHb, FMetHb, FHHb
 SHb < 2 % or SHb > 10%
 Value of Turbidity < 0.5 % or > 5%
Residual
spectrum