Arterial Blood Gas Course Quiz

Course Exercises (not scored)

Question #1

You are asked to obtain arterial blood from a 60-year-old patient receiving mechanical ventilation. Which of the following is the preferred artery?

  • femoral
  • brachial
  • radial
  • dorsalis pedis
The preferred artery is the radial artery.


Question #2

When obtaining blood from the radial artery, which of the following is the ideal angle of entry (in degrees)?

  • 20-30
  • 30-45
  • 45-60
  • 90
Ideal angle of entry is 30-45 degrees.


Question #3

Which of the following is not a possible hazard associated with arterial puncture?

  • hypoxemia
  • hemorrhage
  • infection
  • air contamination
The correct answer is hypoxemia.


Question #4

Which of the following is the preferred needle size when obtaining blood from the radial artery (in gauge)?

  • 18 - 20
  • 20 - 22
  • 22 - 23
  • 25
The correct needle size: 22 - 23.


Question #5

Which of the following is not a value measured by the typical blood gas analyzer?

  • pH
  • PO2
  • PCO2
  • HCO3
HCO3 is not measured.


Question #6

Which of the following values requires a co-oximeter to measure?

  • PO2
  • SO2
  • HCO3
  • pH
The correct answer is SO2.





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