Siemens Rapidlab 1200, Руководство оператора, Страница: 372 / 448

E-12 Rapidlab 1200 Operator’s Guide: System Specifications
02087462 Rev.V
The following tables summarize the results of the Rapidlab 1240 system precision for
manual QC and AutomaticQC.
Recovery and Precision of Blood Gases in Human Whole Blood
To prepare samples for analysis, blood was collected in heparinized vacuum tubes and
tonometered at 37ºC for each of 6 levels for pH and 9 levels for
p CO
2
/ p O
2
. Multiple runs
were performed using these samples on a minimum of 3 Rapidlab 1240 systems.
Table E-9 Rapidlab 1240 Manual QC Precision Results
Analyte Level n Mean WRSD
*
* WRSD = within-run standard deviation
Total SD
†
† Total SD = total standard deviation
pH 1 162 7.121 0.001 0.001
pH 2 161 7.331 0.001 0.002
pH 3 160 7.534 0.001 0.002
p CO
2
1 162 70.8 0.49 0.97
p CO
2
2 161 40.3 0.30 0.48
p CO
2
3 160 23.0 0.21 0.31
p O
2
1 162 147.4 0.71 1.72
p O
2
2 161 97.6 0.73 1.21
p O
2
3 160 23.8 0.94 1.10
Table E-10 Rapidlab 1240 AutomaticQC Precision Results
Analyte Level n Mean WRSD
*
* WRSD = within-run standard deviation
Total SD
†
† Total SD = total standard deviation
pH 1 161 7.156 0.001 0.001
pH 2 163 7.358 0.001 0.001
pH 3 158 7.559 0.001 0.002
p CO
2
1 162 66.5 1.02 1.20
p CO
2
2 163 38.6 0.37 0.58
p CO
2
3 159 21.7 0.45 0.52
p O
2
1 163 153.5 0.74 0.92
p O
2
2 163 104.0 0.93 0.95
p O
2
3 160 68.2 1.19 1.32