Practice NCLEX PN Questions Related

Review Practice NCLEX PN Questions related questions and content

The nurse in the emergency department is caring for a client who was involved in a motor vehicle collision. Which of the following diagnostic test results would best determine the client's oxygenation and ventilation status?

  • A. peak expiratory flow rate reading
  • B. arterial blood gas analysis
  • C. pulse oximetry reading
  • D. CT scan of the chest
Correct Answer: B

Rationale: Arterial blood gas provides the most accurate assessment of oxygenation (PaO2) and ventilation (PaCO2) post-collision. Peak flow assesses asthma, pulse oximetry measures oxygen saturation only, and CT evaluates structure.