Owner manual

C.6
Patient Temperature Correction
7, 8, 9, 10
Patient temperature can be entered into the IRMA TruPoint analyzer if it
deviates from 37°C. The measured pH and blood gas values are recalculated
at the input temperature (T) with the following equations:
pH
(T)
= pH
(37°C)
- 0.0147(T-37) + 0.0065(7.40 - pH
(37°C)
)(T-37)
pCO
2(T)
= pCO
2(37°C)
x 10
(0.019{T-37})
Severinghaus pO
2
equation:
5.49
*
10
-11
*
pO
2
3.88
+0.071
9.72
*
10
-9
*
pO
2
3.88
+2.30
( Temp)
pO
2Final
= pO
2
*
10
›
Temp is T-37°
Kelman-Nunn pO
2
equation:
pO
2Final
= pO
2
x 10
[{0.0052 + 0.027(1-10^-0.13(100-O
2
Sat))} ( Temp)]
›
Temp is T-37°
MDRD GFR
MDRD GFR (mL/min/1.73m
2
)=186 X (CR
*
)
-1.154
x (age
**
)
-0.203
X (0.742 if
female) x (1.21 if black) mg/dL
*
= mg/dL
**
= years