Hyperventilation

Hyperventilation is a condition caused by breathing excessively fast or deeply, resulting in too much carbon dioxide (CO₂) being exhaled and blood CO₂ levels dropping — a state known as hypocapnia. This causes blood vessels to constrict and blood pH to become alkaline, producing symptoms that can mimic or be confused with hypoxia.

Key Points

• •Caused by rapid or deep breathing, often triggered by stress, anxiety, or pain.
• •Symptoms include light-headedness, tingling or numbness in the extremities, muscle spasms (tetany), visual disturbances, and a feeling of breathlessness despite breathing rapidly.
• •Treatment involves consciously slowing the breathing rate, breathing into a paper bag to restore CO₂ levels, and addressing the underlying cause of stress.
• •Supplemental oxygen will NOT relieve hyperventilation symptoms — this is the key distinction from hypoxia.
• •Both hyperventilation and hypoxia can cause dizziness and tingling, but hypoxia may also cause blue lips (cyanosis) while hyperventilation does not.

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