User's Manual

i15 Blood Gas and Chemistry Analysis System User Manual Parameters
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salicyte, 37.5mmol/L bromide, and 20mmol/L β-hydroxybutyrate.
NOTE:
It is possible that there are other substances interfering with the pCO
2
measurement.
12.3 pO
2
pO
2
, the partial pressure of oxygen, is measured by amperometry. The oxygen reduction current
is proportional to the dissolved oxygen concentration.
If test results are inconsistent with the clinical assessment, the sample should be analyzed again
with a new test cartridge.
12.3.1 Intended Use
The pO
2
test is intended for the quantification of pO
2
in arterial, venous, or capillary whole blood
samples.
The pO
2
value of arterial blood is important in assesing the efficiency of pulmonary gas
exchange.
12.3.2 Traceability
pO
2
values assigned to calibrant and controls are traceable to NIST standards.
12.3.3 Temperature Correction
pO
2
is a temperature dependent quantity which is measured at 37°C on the system. The pO
2
value
can be corrected to the patient’s temperature other than 37°C. Patient temperature can be entered
on the Enter Patient Information screen during each patient sample test.
The pO
2
at the patient’s temperature is calculated as follows:
12.3.4 Performance Characteristics
Experiments are designed according to the following CLSI guidelines: CLSI EP6-A for linearity
studies, CLSI EP9-A2 for method comparison studies, and CLSI EP7-A2 for interference studies.
Typical performance data presented below were obtained by technologists, nurses, physicians and