Table 2: Glasgow coma scale.

	Score
Eye opening
Spontaneous	4
Response to verbal command	3
Response to pain	2
No eye opening	1
Best verbal response
Oriented	5
Confused	4
Inappropriate word	3
Incomprehensible sounds	2
No verbal response	1
Best motor response
Obeys commands	6
Localizing response to pain	5
Withdrawal response to pain	4
Flexion to pain	3
Extension to pain	2
No motor response	1
Total

The GCS is scored between 3 and 15, 3 being the worst and 15 the best. It is composed of three parameters: Best eye response (E), best verbal response (V), and best motor response (M). The components of the GCS should be recorded individually; for example E2V3M4 results in a GCS score of 9. A score of 13 or higher correlates with mild brain injury, a score of 9 to 12 correlates with moderate injury, and a score of 8 or less represents severe brain injury.