CAT Exam Practice Related

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For a client with pneumonia, the prescription states, "Oxygen at liters/min per nasal cannula PRN difficult breathing." Which nursing intervention is effective in preventing oxygen toxicity?

  • A. Avoiding the administration of oxygen at high levels for extended periods.
  • B. Administering a sedative at bedtime to slow the client's respiratory rate.
  • C. Removing the nasal cannula during the night to prevent oxygen buildup.
  • D. Running oxygen through a hydration source prior to administration.
Correct Answer: A

Rationale: Choice A is the correct answer because prolonged exposure to high levels of oxygen can lead to oxygen toxicity. Administering oxygen at high levels for extended periods can overwhelm the body's natural defenses against high oxygen levels, causing toxicity. Choices B, C, and D are incorrect. Choice B is unrelated to preventing oxygen toxicity. Choice C is unsafe as removing the nasal cannula can deprive the client of necessary oxygen. Choice D, running oxygen through a hydration source, is not a standard practice for preventing oxygen toxicity.