RADIOMETER ABL800 FLEX - Page 145

6. Parameters ABL800 FLEX Reference Manual
Measured parameters, Continued
sO
2
(continued)
Reference: Siggaard-Andersen O, Wimberley PD, Fogh-Andersen
N, Gøthgen IH. Arterial oxygen status determined with
routine pH/blood gas equipment and multi-wavelength
hemoximetry: reference values, precision and accuracy.
Scand J Clin Lab Invest 1990; 50, Suppl 203: 57-66.
Available as AS106.
Equation The ODC is determined as described in equation for
Oxyhemoglobin Dissociation Curve (points I and III).
(
)
s
FF
F
F
O
S1 MetHb COHb
1 - COHb - MetHb
2
=
×− −
where
S = ODC(P,A,T)
P
pF
sFF
=+
×
×− −
pO
O COHb
O COHb MetHb
2
2
2
()1
A = a
T = 37.0
o
C
FO
2
Hb
Can also be calculated.
Definition Fraction of oxyhemoglobin in total hemoglobin in
blood.
Unit %; fraction
Measuring range %: 0.0-100.0
Fraction: 0.000-1.000
Reference range %: 94-98 (m, f)
Fraction: 0.94-0.98 (m, f)
Equation
(
)
Fs F FO Hb O 1 COHb MetHb
22
=×− −
If sO
2
is not measured, it will be calculated.
If dyshemoglobins (FCOHb, FMetHb) are not known,
they are set to the default values.
Continued on next page
6-8