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Originally Posted by GMScud
Facial expressions, squeezing of the hands... doesn't sound vegetative to me. All his blood has been replaced... Let's keep in mind how the body goes into shock during trauma. I'm praying VERY hard that he's pulling out of this.
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You can still be in a "coma" and do some of these activities. Following directions is the best sign at this point as this implies he has full motor response. Technically speaking, comas are evaluated by eye, verbal, and motor response. As he has some eye response (whether to pain or not is still a question) and that he is apparently following directions is a very good sign. He is going probably intubated so his verbal response will be assumed to be minimum. Adding these together can still deem someone in a "coma".
For those that would like more information--please google "Glasgow coma scale" to learn more--wikipedia does a decent layman's job...