Richmond Agitation Sedation Scale (RASS)
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A Self Learning Module
Richmond Agitation Sedation Scale (RASS)
Delirium is a common event in hospitalized patients (various estimates 25%-60% of older patients, up to 80% if critically ill patients), yet often goes undetected.
Delirium is associated with higher rates of morbidity and mortality and
40% of cases of delirium may be preventable. Agitation is common and often mistreated in the critically ill. Treatment of these patients has been sedative and analgesic medications. Up until this point, there has not been a standardized method to measure a patient’s agitation level. This self learning module will teach you the Richmond Agitation-Sedation Scale (RASS).
The RASS scale has been measured as a valid and reliable way of measuring a patient’s sedation level. RASS is a 10 point scale, with four levels of anxiety or agitation (+1 to +4), one level to denote a calm and alert state (0), and 5 levels of sedation (-1 to -5). This scale allows you to rate a patient from combative (+4) to unarousable (-5), with 0 being the calm and alert state. The RASS score should be documented in your nurse’s notes and should be done every 4 hours or more often as the physician orders. This is not for use if patient on paralytic medication.
Ely, E. W., Truman, B., Shintani, A., Thomason, J. W., Wheeler, A. P., Gordon, S. et al.
Monitoring sedation status over time in ICU patients: the reliability and validity of the
Richmond Agitation Sedation Scale (RASS). JAMA 2003; 289:2983-2991.
Sessler, c. n., Gosnell, M., Grap, M. J., Brophy, G. T. O’Neal, P. V., Keane, K. A. et al. The
Richmond Agitation-Sedation Scale: validity and reliability in adult intensive care patients.
Am J Respir Crit Care Med 2002; 166:1338-1344
Richmond Agitation Sedation Scale (RASS)
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 Drowsy Not fully alert, but has sustained awakening
(eye-opening/eye contact) to voice (> 10 seconds)
-2 Light sedation Briefly awakens with 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
-5 Unarousable No response to voice or physical stimulation
_____________________________________________________________________
Procedure for RASS Assessment
Observe patient
a. Patient is alert, restless, or agitated (score 0 to +4)
2. If not alert, state patient’s name and say to open eyes and look at speaker.
a. Patient awakens with sustained eye opening and eye contact. (score -1)
b. Patient awakens with eye opening and eye contact, but not sustained. (score -2)
c. Patient has any movement in response to voice but no eye contact. (score -3)
3. When no response to verbal stimulation, physically stimulate patient by shaking shoulder
or rubbing sternum
a. Patient has any movement to physical stimulation (score -4)
b. Patient has no response to any stimulation (score -5)
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Verbal
Stimulation
Physical
Stimulation
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