BlackBerry ID, and the Research In Motion products and services accessible using a BlackBerry ID, are not intended for use by anyone under the age of thirteen (13).
To determine âcessation of all functions of the entire brain, including the brain stem,â physicians must determine the presence of unresponsive coma, the absence of brainstem reflexes, and the absence of respiratory drive after a CO 2 challenge.
Unconscious is not really the word you're looking for because that just implies you're not conscious. You can certainly be breathing and neurologically intact if you're just unconscious. I think what you're looking for is how long can the brain survive without oxygen.Well, it's subjective, but pretty standardly, brain tissue will start to die after 4-6 minutes without oxygen.That is a main reason why early CPR and defibrillation is KEY to survival. Even just calling 911 and doing compressions (and no breaths).nconscious is not really the word you're looking for because that just implies you're not conscious. You can certainly be breathing and neurologically intact if you're just unconscious. I think what you're looking for is how long can the brain survive without oxygen.