EasyManuals Logo

RADIOMETER ABL90 FLEX User Manual

RADIOMETER ABL90 FLEX
346 pages
To Next Page IconTo Next Page
To Next Page IconTo Next Page
To Previous Page IconTo Previous Page
To Previous Page IconTo Previous Page
Page #245 background imageLoading...
Page #245 background image
ABL90 FLEX reference manual 8. Parameters
8-29
Eq. 26 [8]:
The ODC is determined as described in equations 46-47 in the section
Oxyhemoglobin Dissociation Curve further in this chapter.
pO
2
(x) is calculated by a numerical method, using:
Eq. Description See…
26.1 S = ODC(P,A,T) Eq. 47
26.2
2,i
1 MetHb COHb
O
1COHbMetHb
SF F
s
FF


Eq. 46.12
26.3

2,i
2,i
P
O
COHb
1
O1COHbMetHb
p
F
sFF

Eq. 46.10
26.4
i2,i
2,i
ttHb1COHbMetHbO
+0.0105 O
cFFs
p

26.5 A = a
26.6 T = 37 °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.
The calculation requires entering the sample type as "Arterial" or "Capillary".
Eq. 27 [5]:
2222
tO O O O 1 COHb MetHb tHbcpsFFc
O
2
is the concentrational solubility coefficient for O
2
in blood (here set to
0.0105 mmol/L/kPa at 37 °C [24].
ctO
2
cannot be calculated on the basis of a default ctHb value.
NOTICE: The formula is different from previous Radiometer analyzers. The
oxygen solubility coefficient is now changed from 0.00983 to 0.0105 to be in
accordance with NCCLS (CLSI)-approved guidelines [24].
The change corresponds to 0.00067 mmol/L/kPa.
Eq. 28:
ctO
2
(a v
) = ctO
2
(a) – ctO
2
(v
)
where ctO
2
(a) and
ctO
2
(v
) are calculated from equation 27 for arterial and mixed
venous blood, respectively. The calculation requires two measurements and input
of both pO
2
(v
) and sO
2
(v
).
Eq. 29 [7]:
2
tHb 1 COHb MetHbBO c F F
BO
2
cannot be calculated on the basis of a default ctHb value.
pO
2
(x)
(or p
x
)
ctO
2
ctO
2
(av
)
BO
2

Table of Contents

Questions and Answers:

Question and Answer IconNeed help?

Do you have a question about the RADIOMETER ABL90 FLEX and is the answer not in the manual?

RADIOMETER ABL90 FLEX Specifications

General IconGeneral
BrandRADIOMETER
ModelABL90 FLEX
CategoryMeasuring Instruments
LanguageEnglish

Related product manuals