OPTIMedical OPTI CCA-TS - Page 251

A-12 Operator’s Manual – OPTI CCA-TS
APPENDIX A - TECHNICAL SPECIFICATIONS
For Fetal hemoglobin:
( )
2
2
2
OlgOlg
50
O%100
O
9.2
)113.4(lg
lg
:
100.25
22
S
S
Q
Q
PO
where
P
k
k
−
=
+
=
⋅=
− PP
[mmHg]
6
AaDO
2
The alveolar to arterial oxygen tension gradient (PAO
2
- PaO
2
) is the difference between the
alveolar oxygen tension, estimated above, and the measured oxygen tension of arterial blood.
PAO
2
= (P
total
– 47) FIO
2
– PACO
2
[FIO
2
+ (1 - FIO
2
)/R] [mmHg]
7
PACO
2
= PaCO
2
(alveolar PCO
2
)
Apply above equation for PAO
2
≥ PO
2
, otherwise PAO
2
= PO
2
pH
t
pH corrected to patient temperature other than 37 ºC.
)37t()]4.7pH(0065.00147.0[pHpH
t
−⋅−⋅+−=
[pH-unit]
7
cH
+t
Concentration of hydrogen ions corrected to patient temperature other than 37 ºC.
cH
t pH
t
=
−
10
9( )
[nmol/L]
6
PCO
2
t
PCO
2
value corrected to patient temperature other than 37 ºC.
P PCO CO
t
t
2 2
0 019 37
10= ⋅
⋅ −. ( )
[mmHg]
7
PO
2
t
PO
2
value corrected to patient temperature other than 37 ºC.
( )
P P
2
P
P
O O
t
O
O
t
= ⋅
⋅
−
⋅ +
⋅
−
⋅ +








⋅ −
2
5 49 10
11
2
3 88
0 071
9 72 10
9
2
3 88
2 30
37
10
.
.
.
.
.
.
[mmHg]
6