brain anoxia

If someone who attempted suicide and was technically in a coma prior to receiving medical attention what are the chances of survival? The estimation of inadequate oxygen is at least 5 hours. She had taken extremely large doses of Tylenol, vicodin, effexor, and ativan. Her heart beat is irregular due to the effexor and her liver/kidney function is being monitored due to the Tylenol.

[Gio77Italy]

why do you say her brain had bad oxygenation for 5 hours? if she was breathing all the time the correct term might be Cerebral Hypoxia. I think MRI can reveal if there have been permanent lesions.