<prompt> Hyperbaric oxygen is dangerous because it:Decreases displacement of 02 from kHbDecreases respiratory driveEnzyme damageIs toxic to tissures  <response>: D i.e. Is toxic to tissuesDecreased cerebral blood flow due to cerebral vasoconstriction caused by high 02 tension is its protective effectQ not toxic. Which protects brain from free radicle injury. 