Table 2.

Depth of the sedation scale according to the University of Michigan scale (UMSS).

Score 0	Completely awake.
Score 1	Slightly sedated, tired, relaxed, and responds to speech or voice prompts.
Score 2	Moderately sedated, drowsy, asleep, and responds easily to light tactile stimulations or verbal commands
Score 3	Deeply sedated, deeply asleep, and responds only to strong physical stimulations.
Score 4	Unresponsive.