ADD-ONS / SCALES
RASS (Richmond Agitation-Sedation Scale)
Updated on 07/08/2024, published on 13/01/2023
- the test evaluates the quantitative aspect of consciousness and the level of psychomotor activity
- it is most commonly used in mechanically ventilated patients to avoid both oversedation and undersedation
- it is most commonly used in mechanically ventilated patients to avoid both oversedation and undersedation
- timing is crucial; sedation should be reduced or discontinued 1-2 hours before testing
- start with observing the patient
- patient is alert, in a normal state (0)
- patient is hyperactive (score +1 to +4)
- patient is alert, in a normal state (0)
- if not alert, state the patient’s name and request to open their eyes and look at the speaker
- patient awakens with sustained eye contact (score –1)
- patient awakens with eye contact, but not sustained (score –2)
- patient exhibits any movement in response to voice but no eye contact (score –3)
- scores -1 to -3 indicate varying degrees of somnolence; the patient responds to verbal stimulation and may be further tested for delirium
- if the response to verbal stimulation is absent, physically stimulate the patient by shaking the shoulder and/or rubbing the sternum
- any movement in response to physical stimulation (score –4)
- no response to any form of stimulation (score –5)
- scores -4 and -5 correspond to a profound disturbance of consciousness (sopor – coma) and preclude further testing for delirium
RASS (Richmond Agitation-Sedation Scale) |
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Score | Term | Description |
|
+4 | combative | overtly combative, violent, immediate danger to staff | |
+3 | very agitated | pulls or removes tube(s) or catheter(s); aggressive | |
+2 | agitated | frequent non-purposeful movement; fights ventilator | |
+1 | restless | anxious but movements not aggressive vigorous |
|
0 | alert and calm | ||
-1 | somnolent /drowsy |
not fully alert, but has sustained awakening (eye-opening/eye contact) to voice (>10 seconds) | verbal stimulation |
-2 | light sedation | briefly awakens with nonsustained eye contact to voice (<10 seconds) | |
-3 | moderate sedation | movement or eye-opening to voice (but no eye contact) | |
-4 | deep sedation | no response to voice, but movement or eye opening to physical stimulation | physical stimulation |
-5 | unarousable | no response to voice or physical stimulation |