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5 Quality control
Instructions for Use, Roche OMNI C, Rev. 4.0, December 2002
5-11
5.6
Multirules
The evaluation of QC results is based on the Westgard
1
rules and their interpretation for
blood gas analysis
2
. The Multirule process was derived from these rules. It permits early
detection of random and systematic errors associated with the measuring device and its
operation.
CAUTION: The Multirules procedure can only be applied in connection with a suitable con-
trol material (e.g. COMBITROL TS, AUTO-TROL TS).
The Multirule procedures produce the best results when 3 QC measurements with randomly
selected levels are completed per series (time between two 2-point calibrations). A mini-
mum of 2 QC measurements / series or 6 QC measurements / 3 series is required.
The QC concept expects Multirules rule 1 and 2 to be activated.
Press the following buttons to check the settings:
> Parameters > Miscellaneous settings > Multirules
Fig. 12
Select additional desired rules in the left window and assign it to the corresponding param-
eter which is listed in the right window under "Parameter."
CAUTION: It is not possible to activate all rules at the same time!
The activation of range 2SD automatically deactivates all other rules (rules 1-6)
.
1. James O. Westgard, et al:
A Multi-Rule Shewhart Chart for Quality Control in Clinical Chemistry
. Clinical Chemis-
try, Vol. 27, No.3, 1981
2. Elsa F. Quam BS, Lorene K. Haessig BS, Marlene J. Koch BS:
A Comprehensive Statistical Quality Control Program
for Blood Gas Analyzers.
Journal of Medical Technology 2:1 January 1985
Содержание OMNI C
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Страница 44: ...1 Introduction 1 36 Instructions for Use Roche OMNI C Rev 4 0 December 2002...
Страница 46: ...2 Specifications 2 II Instructions for Use Roche OMNI C Rev 4 0 December 2002...
Страница 56: ...2 Specifications 2 10 Instructions for Use Roche OMNI C Rev 4 0 December 2002...
Страница 58: ...3 Calibration 3 II Instructions for Use Roche OMNI C Rev 4 0 December 2002...
Страница 62: ...3 Calibration 3 4 Instructions for Use Roche OMNI C Rev 4 0 December 2002...
Страница 64: ...4 Measurement 4 II Instructions for Use Roche OMNI C Rev 4 0 December 2002...
Страница 76: ...4 Measurement 4 12 Instructions for Use Roche OMNI C Rev 4 0 December 2002...
Страница 78: ...5 Quality control 5 II Instructions for Use Roche OMNI C Rev 4 0 December 2002...
Страница 118: ...6 Maintenance 6 24 Instructions for Use Roche OMNI C Rev 4 0 December 2002...
Страница 120: ...7 Trouble shooting 7 II Instructions for Use Roche OMNI C Rev 4 0 December 2002...
Страница 132: ...7 Trouble shooting 7 12 Instructions for Use Roche OMNI C Rev 4 0 December 2002...
Страница 134: ...8 Operating modes 8 II Instructions for Use Roche OMNI C Rev 4 0 December 2002...
Страница 148: ...8 Operating modes 8 14 Instructions for Use Roche OMNI C Rev 4 0 December 2002...
Страница 152: ...Index 4 Instructions for Use Roche OMNI C Rev 4 0 December 2002...