Be aware that patients may experience significant hypoxemia after hyperventilation.

Does hyperventilation cause low oxygen?

Normally, you breathe in oxygen and breathe out carbon dioxide. But when you hyperventilate, the carbon dioxide levels in your bloodstream drop too low.

Why does hyperventilation cause hypoxia?

Acute respiratory alkalosis decreases cerebral blood flow, increases the affinity of hemoglobin for oxygen, and can result in cerebral hypoxia.