Final answer:
C) Interpret blood gas machine ISE values with caution and confirm with other tests. Recalibrate the machine if erroneous readings are suspected or as part of routine maintenance.
Step-by-step explanation:
When a blood gas machine reports ion-selective electrode (ISE) values, it is essential to interpret these results with caution and confirm them with other tests. Ion-selective electrodes are used to measure specific ions in the blood, such as potassium, sodium, and chloride, but these measurements can be influenced by various factors such as changes in pH or the presence of other substances. Therefore, it is best to confirm with other tests when an ISE report suggests an abnormal value. Simply ignoring the results is not advisable, and reporting them as accurate without further confirmation can lead to a misdiagnosis. Recalibration of the machine is recommended if there is suspicion that the machine is giving erroneous readings or after routine maintenance according to the manufacturer's instructions.