RADIOMETER ABL800 FLEX - Page 170

ABL800 FLEX Reference Manual 6. Parameters
List of equations, Continued
pO
2
(a/A)
Eq. 24:
)A(O
(a)O
(a/A)O
2
2
2
p
p
p =
The calculation requires entering the sample type as “Arterial” or “Capillary”.
pO
2
(a/A,T)
Eq. 25:
)(A,O
),(O
=)(a/A,O
2
2
2
Tp
Tap
Tp
The calculation requires entering the sample type as “Arterial” or “Capillary”.
pO
2
(x)
(or p
x
)
Eq. 26 [8]:
The ODC is determined as described in equations 46 - 47 in the section
Oxyhemoglobin Dissociation Curve.
pO
2
(x) is calculated by a numerical method, using:
Eq. Description See…
26.1
S = ODC(P,A,T) Eq. 47
26.2
(
)
s
FF
F
F
O
MetHb COHb
COHb MetHb
2,i
=
×− −
−
−
S 1
1
Eq. 46.12
26.3
( )
p
F
sFF
O
P
COHb
O COHb MetHb
2,i
2,i
=
+
×− −
1
1
Eq. 46.10
26.4
(
)
t tHb 1 COHb MetHb O
+9.83 10 O
i2
3
2,i
=×− − ×
××
−
cFFs
p
,i
+
26.5
A = a
26.6
T = 37
o
C
When t
i
= ctO
2
– 2.3 mmol/L, then pO
2,i
= pO
2
(x), where ctO
2
is determined as
described in equation 27.
pO
2
(x) cannot be calculated on the basis of a default ctHb value.
pO
2
(x) can only be calculated if the measured sO
2
(a) ≤ 0.97 (or p50(st) keyed in).
The calculation requires entering the sample type as “Arterial” or “Capillary”.
Continued on next page
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