OPTi CCA-TS2 User Manual

A-12 Operator’s Manual – OPTI CCA-TS2
APPENDIX A - TECHNICAL SPECIFICATIONS
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
AaDO
2
t
Alveolar to arterial oxygen tension difference corrected to patient temperature other than 37 ºC.
AaDO AO aO
t t t
2 2 2
= −P P
[mmHg]
7
where:
PAO
2
t
= (P
total
– PH
2
O
t
) FIO
2
– PACO
2
t
[FIO
2
+ (1 – FIO
2
)/R]
with PH
2
O
t
= 47 * 10
[0.0237 – 0.0001 (t-37)] (t-37)
and PACO
2
= PaCO
2
(alveolar PCO
2
= arterial PCO
2
)
Applyaboveequationfor PAO
2
t
≥ PO
2
t
, otherwise PAO
2
t
= PO
2
t

OPTi CCA-TS2 Specifications

General

Brand	OPTi
Model	CCA-TS2
Category	Measuring Instruments
Language	English