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Kaplan Qbank USMLE



Author3 Posts
  #1

A 78-year-old man who lives in a nursing home has a fever and muscle rigidity after receiving a drug for treatment of a psychotic episode. Serum creatine kinase activity is increased. Which of the following drugs is the most likely cause of these adverse effects?

A. Clozapine
B. Diazepam
C. Haloperidol
D. Lithium carbonate
E. Olanzapine
F. Risperidone



  #2

C. Haloperidol?

Dystonia is the first side-effect seen, as early as 4 hours in the treatment.


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  #3

C
The other antiphychotics are atypical and have little or no extrapyramidal effects

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