Friday, 5 October 2018

Q. A client with a tentative diagnosis of psychosis is admitted to the psychiatric unit. A physician orders the phenothiazine thioridazine 50 mg by mouth three times per day. Phenothiazines differ from central nervous system (CNS) depressants in their sedative effects by producing:

A. deeper sleep than CNS depressants.
B. greater sedation than CNS depressants.
C. a calming effect from which the client is easily aroused.
D. more prolonged sedative effects, making the client more difficult to arouse.

Correct Answer: C

Explanation: Shortly after phenothiazine administration, a quieting and calming effect occurs, but the client is easily aroused, alert, and responsive and has good motor coordination.

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