CNN Sanjay Gupta MD January 26, 2014 12:31:00
Munoz parents to see her now. she has been brain dead. >> a coma is a severe brain injury and the brain, though, is still getting blood flow and still getting oxygen and still generating electrical activity, which is what the brain does. but most importantly in a coma, even though that person is in a state of semi responsiveness, looks like a deep sleep, there is a potential for recovery. >> reporter: a long-term coma can become a vegetative state. in a rare number of cases, patients have come out of that condition. but if diagnosed correctly, brain death is permanent. >> there is no oxygen co...
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