Table 2 The Leiden Observer’s Assessment of Alertness and Sedation scale

0

Normal alertness, eyes open, responds normal to command

1

Drowsy with open eyes, closed and opened on command

2

Drowsy with closed eyes, opened in response to light auditory stimulus

3

Eyes closed, opened in response to rubbing the shoulder or a load auditory stimulus

4

Eyes closed and opened only briefly in response to touching the subject

5

Eyes closed, not aroused by touching the subject, aroused by a painful stimulus

6

Not aroused by a painful stimulus