  
Signs and Symptoms of Hypoxia
|
Be aware that in many cases, the signs and symptoms of hypoxia
are not obvious, especially to the one affected, until it is too late.
| OXYGEN | SIGNS AND SYMPTOMS | ||
 |
19.5% | Minimum acceptable oxygen level. | |
| 15-19% | Decreased ability to work strenuously.
Impaired coordination. Early symptoms. |
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| 12-14% | Respiration increases.
Poor judgment. |
||
| 10-12% | Respiration increases.
Lips turn blue (cyanosis). |
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| 8-10% | Mental failure.
Fainting. Nausea Vomiting. Unconsciousness. |
||
| 6-8% | 4-5 minutes - possible recovery
6 minutes - 50% fatal 8 minutes - fatal |
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| 4-6% | Coma in 40 seconds.
Death |
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