Determining level of consciousness

This is pretty much RT 101 stuff, but the following are the various levels of consciousness one might observe of others. A wise RT will be familiar with these terms and use them accordingly.

1. Lethargic: somnolence: sleepy
2. Stuporious: confused: responds inappropriately, OD, intoxication
3. Semi-comatose: responds only to painful stimuli
4. Comatose: does not respond to painful stimuli
5. Obtunded: drowsy, maybe decreased cough/gag reflex