GCS

Glasgow Coma Scale -
The second scoring system which we are trained to use, however AVPU is the easier and more favoured one. Well, I think so anyway.
It goes roughly like this:

Best Eye Response. (4)
1. No eye opening.
2. Eye opening to pain.
3. Eye opening to verbal command.
4. Eyes open spontaneously.

Best Verbal Response. (5)
1. No verbal response
2. Incomprehensible sounds.
3. Inappropriate words.
4. Confused
5. Orientated

Best Motor Response. (6)
1. No motor response.
2. Extension to pain.
3. Flexion to pain.
4. Withdrawal from pain.
5. Localising pain.
6. Obeys Commands.

15 is a fully responsive patient and is ideal.
A Coma Score of 13/14 correlates with a mild brain injury. 9 to 12 is a moderate injury and 8 or less a severe brain injury.
However, stating to a colleague that a casualty is GCS 11, for example, is pretty much meaningless. The score needs to be broken down into its seperate components, e.g.
Eye response - 3
Verbal response - 3
Motor response - 5
= GCS 11.