Hypoxia is the lack of sufficient oxygen. Any living thing deprived of oxygen or exposed to an atmosphere with an insufficient ratio of oxygen to other soluble gases will eventually suffer symptoms of hypoxia.
In humans, symptoms of hypoxia typically vary depending on the partial pressure of oxygen present in air.
|Oxygen Pressure (mb)||Symptoms|
|200||None (Normal Range)|
|120 to 150||Loss of muscular coordination for skilled movements|
|100 to 140||Faulty judgement and rapid fatigue|
|60 to 80||Rapid unconsciousness, recovery possible with quick treatment|
|60 or less||Death occurs in 8 minutes or less|
Exposure to an oxygen partial pressures of less than 120mb, over an extended time, can eventually lead to organ failure and death if not corrected.