RET 2027 Ex.1 review-23

Which of the following values are measured by the arterial blood gas machine and not calculated?

I. PH

II. PCO2

III. HCO3

IV. PO2

V. BE

• I, II, III

• I, II, III, IV

• I, II, IV

• I, II, III, IV, V

Another name for the PH electrode is:

• Clark electrode

• Severinghaus electrode

• Diffusion electrode

• Sanz electrode

Another name for the PO2 electrode is:

• Clark electrode

• Severinghaus

• Diffusion electrode

• Sanz electrode

An infant is placed on a transcutaneous oxygen monitor. The TcPO2 is reading 40 mmhg less than the PaO2 obtained from the arterial sample. All of the following could cause this problem EXCEPT:

• improper calibration of the transcutaneous electrode

• room air contamination of the transcutaneous electrode

• inadequate heating of the skin at the electrode site

• inadequate perfusion of the skin at the electrode site

All are common sites for indwelling vascular catheters EXCEPT:

• Peripheral Artery

• central vein

• Pulmonary Artery

• Temporal Artery

The procedure whereby a blood measuring instrument is exposed to samples at two or more known levels to ensure accuracy is termed:

• proficiency testing

• analyzer calibration

• pre-analyzer validation

• preventive maintenance

To measure actual blood O2 saturation, you would recommend:

• transcutaneous PO2

• pulse oximetry

• arterial blood gas

• Co-oximetry

Factors that affect transcutaneous blood gas monitoring accuracy includes all of the following, EXCEPT:

• variation in skin characteristics

• temperature

• electrode placement

• hematocrit

A pulse oximeter is being used to monitor a patient who was rescued from a fire. SpO2 is 90%; however, the patient is unconscious and shows signs of respiratory distress. What additional test should the RT recommend?

• CT Scan

• Electrolyte measurement

• CO-Oximetry

• Hemoglobin and hematocrit levels

Changes on procedures, staff training and retraining, closer supervision and increase in maintenance checks are an example of which of the following quality control elements?

• external quality control

• remedial action

• calibration verification

• performance validation