Operator’s Manual – OPTI CCA-TS2
A-11
APPENDIX A - TECHNICAL SPECIFICATIONS
If measured O
2
Hb and tHb are not available and calculated
S
O
2
is enabled:
2
2
2
O
00314
.
0
tHb
100
O
39
.
1
O
P
S
t
⋅
+
⋅
⋅
=
[vol%]
7
NOTE
: If
P
O
2
is not available, ct
O
2
is calculated with
P
O
2
= 90 mmHg
.
P50
The oxygen partial pressure at half saturation,
P
50, is defined as the
P
O
2
value for a given blood
sample at which 50% of the hemoglobin is saturated with oxygen. While the actual
P
50 value can
only be determined by interpolation after measurement of oxygen saturation of a blood specimen
tonometered to levels of oxygen to provide an oxyhemoglobin slightly greater than and slightly
less than 50% with pH and
P
O
2
held constant at 7.4 and 40 mmHg respectively, the OPTI CCA-
TS2 allows for the estimation of
P
50 from measured
S
O
2
% ,
P
O
2
and pH. If a measured
S
O
2
% is
not available, the
P
50 value may be input via keypad.
For Adult hemoglobin:
(
)
2
2
2
O
lg
O
lg
50
O
%
100
O
9
.
2
)
172
.
4
(lg
O
lg
:
10
7
.
26
2
2
S
S
Q
Q
where
k
k
−
=
+
=
⋅
=
−
P
P
P
P
[mmHg]
6
For Fetal hemoglobin:
(
)
2
2
2
O
lg
O
lg
50
O
%
100
O
9
.
2
)
113
.
4
(lg
lg
:
10
0
.
25
2
2
S
S
Q
Q
PO
where
P
k
k
−
=
+
=
⋅
=
−
P
P
[mmHg]
6
Содержание CCA-TS2
Страница 1: ...OPTI CCA TS2 Analyzer Operator s Manual ...