Cardinal Health Alaris 8000 Series Directions For Use Manual page 276

8210 Series (Continued)
When saturation is calculated from a blood gas partial
pressure of oxygen (
the p measurement of the
S O
2
occurs because the calculated saturation was not
appropriately corrected for the effects of variables that shift the
relationship between
pressure of carbon dioxide (
hemoglobin. To compare functional saturation measurements
to those from an instrument that measures fractional
saturation, fractional measurements must be converted as
follows:
Oxyhemoglobin Dissociation Curve
pH
­
100
Temperature
¯
PCO
¯
2,3-DPG
¯
Fetal Hb
­
50
0
4-32
General Information
Principle of Operation (Continued)
), the calculated value may differ from
PO
2
p Module, this usually
S O
2
and p , temperature, the partial
PO H
2
),
PCO 2,3-DPG
2
2
¬
®
pH
­
Temperature
¯
PCO
¯
2,3-DPG
¯
50
PO (mmHg)
2
, and fetal
2
100
(8210)
Alaris System Directions for Use
®
SpO Modules Section
2