27
Quality control and calibrations, continued
Start of the system-check cycle
System checks: Automatic test sequences done with each measurement and at other times to
make sure that all parts of the analyzer operate within specifications.
Built-in QC measurements
Sensitivity calibration of
p
CO
2
,
c
Glu,
c
Lac and status calibration of the oximetry parameters
Sensitivity calibration of pH and the electrolytes (
c
K
+
,
c
Na
+
,
c
Ca
2+
,
c
Cl
–
)
Sensitivity calibration of
p
O
2
Time period after a replacement Calibration frequency
0-4 hours In connection with every measurement
4-6 hours Every 15 minutes
6-8 hours Every 30 minutes
8-12 hours Every hour
12-24 hours Every 2 hours
A status calibration of all parameters (except the oximetry parameters) is done before
every patient, QC and sensitivity calibration measurement.
Calibration frequency after a sensor cassette replacement
Calibrations are done more frequently in the 24-hour period that follows a sensor
cassette replacement. This has an effect on the number of analyses that can be done
per hour during this time period.
Note: A calibration takes up to 2½ minutes.
Here is an overview of the default
schedule for system checks, QC
and calibration measurements that
the analyzer does to make sure that
patient results are accurate, precise
and reliable.
27 of 36EXT-VEND-MAN-0023-1 Owner:Julie Monnox Approved:27 Mar 2019
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