Nonetheless, clinicians may underuse sedation, usually from a lack of experience or from unchallenged myths regarding its use.
Sedation is the depression of a patient's awareness to the environment and reduction of his or her responsiveness to external stimulation.
sedate - dignified and somber in manner or character and committed to keeping promises; "a grave God-fearing man"; "a quiet sedate nature"; "as sober as a judge"; "a solemn promise"; "the judge was solemn as he pronounced sentence"serious - concerned with work or important matters rather than play or trivialities; "a serious student of history"; "a serious attempt to learn to ski"; "gave me a serious look"; "a serious young man"; "are you serious or joking?
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co.
The medical sense of the word is to be tranquilized, either to calm your nerves after a shock or in preparation for surgery.