RADIOMETER ABL800 FLEX, Operator'S Manual

Page: 179 / 438

ABL800 FLEX Operator's Manual 4. Sample measurements
Calculation of FShunt and ctO
2
(a -
_
V
)
Calculation of
To obtain the calculated values of F Shunt and c tO
2
(a-v
–
), it is necessary to
analyze a mixed-venous and an arterial (or capillary) blood sample from the
patient.
FShunt and
ctO
2
(a-v
–
)
Do the following:
Step Action
Make, if required, a new patient report layout (see Patient Reports in
chapter 3 ) with the following parameters included:
1.
•
F Shunt and/or c tO
2
(a-v
–
) into the Patient Result
•
p O
2
(v
–
), s O
2
(v
–
), F O
2
(I), RQ and T (patient temperature) into the
Patient ID
Analyze the mixed-venous sample and record the p O
2
(v
–
) and s O
2
(v
–
). 2.
3. Analyze the arterial sample.
On the Patient Identification screen, select the sample type as
“Arterial“ or “Capillary“ and key in the following values:
4.
•
p O
2
(v
–
) and s O
2
(v
–
) from the mixed-venous sample (step 2 above)
F O
2
(I) if it differs from the default value of 0.21 (for F shunt)
•
RQ if it differs from the default value of 0.86 (for F shunt)
•
T if it differs from the default value of 37 °C (for F shunt).
•
p 50(st) from the mixed-venous sample if s O
2
(a) > 97 %.
•
NOTICE: The F Shunt value will be available as an estimated value even
without the data obtained from the mixed-venous sample.
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