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Table 1 Comparison of Richmond Agitation-Sedation Scale and University of Michigan Sedation Scale

From: Validity of the Richmond Agitation-Sedation Scale (RASS) in critically ill children

Richmond Agitation-Sedation Scale

University of Michigan Sedation Scale

Score

Term

Description

Score

Term

Description

4

Combative

Overtly combative or violent; immediate danger to staff

   

3

Very agitated

Pulls on or removes tube(s) or catheter(s) or has aggressive behavior toward staff

   

2

Agitated

Frequent nonpurposeful movement or patient-ventilator dyssynchrony

   

1

Restless

Anxious or apprehensive but movements not aggressive or vigorous

   

0

Alert and calm

 

0

Awake and alert

 

−1

Drowsy

Not fully alert, but has sustained (more than 10 s) awakening, with eye contact, to voice

1

Minimally sedated

Tired/sleepy, appropriate response to verbal conversation and/or sound

−2

Light sedation

Briefly (less than 10 s) awakens with eye contact to voice

 

−3

Moderate sedation

Any movement (but no eye contact) to voice

2

Moderately sedated

Somnolent/sleeping, easily aroused with light tactile stimulation or a simple verbal command

−4

Deep sedation

No response to voice, but any movement to physical stimulation

3

Deeply sedated

Deep sleep, arousable on with significant physical stimulation

−5

Unarousable

No response to voice or physical stimulation

4

Unarousable

Unarousable

  1. From Sessler et al. [8] and Malviya et al. [10]