Aeromedical factorsQuestion 710 of 934

What is the most common cause of hypemic hypoxia?

  1. A blocked airway
  2. Carbon monoxide poisoning
  3. Excessive acceleration forces
  4. Use of alcohol
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Correct answer: Carbon monoxide poisoning

Hemoglobin chemically unable to bind oxygen is the usual cause. CO poisoning is the most common form.

Source: Pilot's Handbook of Aeronautical Knowledge (FAA-H-8083-25C), Chapter 17: Aeromedical Factors — Hypemic Hypoxia, page 425

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Questions last reviewed: 18 October 2026