Which item is NOT listed as a symptom of hypoxia?

Which item is NOT listed as a symptom of hypoxia?

• A. Nausea
• B. Dizziness
• C. Headache
• D. Slurred Speech

Answer: (A)

When oxygen levels drop, the brain is the first to show trouble, so early signs are mainly neurological. Dizziness reflects impaired balance and brain function, a headache indicates brain stress from low oxygen, and slurred speech signals that neural control of muscles and language areas is affected. Nausea isn’t part of the standard aviation hypoxia symptom list, so it’s not considered a typical early hypoxia indicator. That mismatch is why it’s the item that’s not listed as a hypoxia symptom. If you notice any of the signs, descend and use oxygen promptly.

When oxygen levels drop, the brain is the first to show trouble, so early signs are mainly neurological. Dizziness reflects impaired balance and brain function, a headache indicates brain stress from low oxygen, and slurred speech signals that neural control of muscles and language areas is affected. Nausea isn’t part of the standard aviation hypoxia symptom list, so it’s not considered a typical early hypoxia indicator. That mismatch is why it’s the item that’s not listed as a hypoxia symptom. If you notice any of the signs, descend and use oxygen promptly.