RADIOMETER ABL800 FLEX, Справочное руководство

Страница: 170 / 206

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
T p
T a p
T p
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
.
p
O
2
(x) is calculated by a numerical method, using:
Eq. Description See…
26.1
S = ODC(P,A,
T
) Eq. 47
26.2
( )
s
F F
F F
O
MetHb COHb
COHb MetHb
2,i
=
× − −
− −
S
1
1
Eq. 46.12
26.3
( )
p
F
s F F
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
i 2
3
2,i
= × − − ×
× ×
−
c F F s
p
,i
+
26.5
A = a
26.6
T
= 37
o
C
When t
i
=
c
tO
2
– 2.3 mmol/L, then
p
O
2,i
=
p
O
2
(x), where
c
tO
2
is determined as
described in equation 27.
p
O
2
(x) cannot be calculated on the basis of a default
c
tHb value.
p
O
2
(x) can only be calculated if the measured
s
O
2
(a)
≤
0.97 (or
p
50(st) keyed in).
The calculation requires entering the sample type as “Arterial” or “Capillary”.
Continued on next page
6-33