RADIOMETER ABL800 FLEX - Page 169

6. Parameters ABL800 FLEX Reference Manual
List of equations, Continued
p50(T)
(continued)
Description See…
P = ODC(S,A,T) Eq. 47
( )
S =
×− +05 1. FF F
F
COHb - MetHb COHb
1- MetHb
Eq. 46.11
()
0.37
)(
pH
04.1a −××−= T
T
A
∂
∂
( )
∂
∂
pH
pH
()
.. ()
T
=− × − × × −
−−
146 10 65 10 37 740
23
.
T = patient temperature in
o
C (keyed-in)
Eq. 21:
p50(st)
p50 is calculated for pH = 7.40, pCO
2
= 5.33 kPa, FCOHb = 0, FMetHb = 0, FHbF
= 0.
The ODC is determined as described in equations 46 - 47 in the section
Oxyhemoglobin Dissociation Curve, see equation 47.
p50(st) = ODC(S,A,T)
where
Description See…
S = 0.5 Eq. 46.11
A = a6 corresponds to pH = 7.40, pCO
2
= 5.33 kPa, FCOHb = 0,
FMetHb = 0, FHbF = 0
Eq. 46.13
T = 37.0
o
C
pO
2
(A-a)
Eq. 22:
pppO(A a)= O(A)- O(a)
22
−
2
T
2
The calculation requires entering the sample type as “Arterial” or “Capillary”.
Eq. 23:
pO
2
(A-a,T)
pTpTpO(A a,)=O(A,) O(a,)
22
−
−
The calculation requires entering the sample type as “Arterial” or “Capillary”.
Continued on next page
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