NOVA BIOMEDICAL Stat Profile PRIME - Calculated Values

B-6
Prime CCS Instructions for Use Manual
B.2 Calculated Values
The analyzer’s microcomputer uses the measured results to
calculate other clinically relevant parameters. This section
outlines the equations used to calculate these values.
B.2.1 Temperature Correction for Measured Values
The Stat Prole Prime CCS Analyzer allows you to enter
the patient temperature when this differs from 37 °C, as for
example in patients having surgery under hypothermia. The
pH, PCO
2
, and PO
2
sample values, at the patient’s actual
temperature, are then calculated as follows:
pH
(corrected)
= pH + [- 0.0147 + 0.0065 (7.400 - pH)](T - 37)
Equation 13
PCO
2 (corrected)
= PCO
2
x e (0.04375(T - 37)) Equation 14
PO
2 (corrected)
= PO
2
x 10
U
Equation 15
(5.49 x 10
11
) Y + 0.071
U = –————————— x (T - 37)
(9.72 x 10
-9
)Y + 2.30
and Y = e[3.88 x ln(PO
2
)]
([
]
)