ITC IRMA TruPoint Blood Analysis System - Manual (Page 150)

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-O2Sat))} ( 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