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OAA/S Scoring System

Response Speech Facial Expression Eyes Score
Responds readily to name being called Normal Normal Bright, no drooping 5 (Alert)
Responds lethargically to name being called Slightly slow Mildly relaxed Glossy or slightly drooping (less than half of the eye) 4
Responds only to loud name calling Slurred or noticeably slowed speech Significantly relaxed Glossy and noticeably drooping (more than half of the eye) 3
Responds to mild pinching or shaking Nearly indistinguishable 2
No response to mild pinching or shaking 1

Explanation

The sedation depth required for surgery is generally considered safe between scores of 2 and 4.

The OAA/S scoring system is the Observer’s Assessment of Alertness/Sedation scale.

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