The Oxygen toxicity reference article from the English Wikipedia
on 24-Jul-2004 (provided by Fixed Reference: snapshots of
Wikipedia from  Oxygen toxicity  Connect with a children's
charity on your social network Oxygen is toxic at elevated
partial pressures and oxygen toxicity can therefore occur
whenever the oxygen partial pressure is substantially elevated
for more than a few hours. Oxygen toxicity is a diving disorder
and also a potential complication of mechanical ventilation.
When diving, oxygen toxicity maybe caused by breathing any
breathing gas at the high pressure of depth.  In humans, there
are several types of oxygen toxicity: