The sedation scoring system used by Yate et al in patients being ventilated in the intensive care unit uses different score designations while the sedative is being infused and after the infusion has been stopped.
Clinical Status during infusion
Score
patient asleep or awake but needing no more analgesia
A1
mildly restless, but answers "no" when asked if more analgesia is required
A2
mildly restless, answers "yes" when asked if more analgesia is required
A3
restless, difficult to ventilate or in obvious pain
A4
Clinical Status after infusion completed
Score
asleep and unrousable
B1
asleep and rousable
B2
awake but drowsy
B3
wide awake and alert
B4
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