Mental Health: Dosage
Calculation2026 Questions and
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The patient on the unit has a dystonic reaction to Haldol
po. The prescriber orders Benztropine 2mg IM. The vial
reads Benztropine 1mg per ml. How many ml's will the
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nurse draw up to administer to this patient?
_________________. Ans: 2 mL
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The ER doctor orders Ativan 2 mg IM for an agitated
patient. The Ativan vial reads: Diazepam (Valium) 5mg/ml.
How many ml's will the nurse draw up to inject? Ans: none
its the wrong med
A nurse is providing care for a patient who has Bipolar
disorder and is experiencing acute mania. The patient's
morning lithium level is 1.5 mEq/L. Which of the following
additional laboratory data has the highest priority?
a. Hemoglobin 15g/dl
b. Serum T4 is 5mcg/dl
c. Serum sodium 125 mEq/L
d. K+ 3.5mEq/L Ans: c. Serum sodium 125 mEq/L
The nurse has obtained an order to administer to an
agitated and aggressive 20 year old patient Haloperidol
, 2
2mg IM stat. The vial reads Haloperidol 5mg/ml. How
many cc's will the nurse draw up to administer?
_____________________________________. Ans: 0.4
The NP order reads: Olanzapine (Zyprexa) 20mg po qhs.
The nurse only has 5 mg tablets. How many tablets will
the nurse administer to this patient? ___________________.
Ans: 4 tabs
A child on the psychiatric unit age 7 is having a dystonic
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reaction from his dose of Aripiprazole 2mg po daily. The
order is to give Diphenhydramine 25mg IM stat. The nurse
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has on hand in the med room Diphenhydramine 50 mg/ml.
How many cc's will the nurse draw up to administer to this
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child? ___________________. Ans: 0.5
What time of day should the nurse administer Desyrel 100
mg po? ___________________. Ans: before bed
A patient diagnosed with schizophrenia is on Clozapine.
The nurse will monitor which labs for adverse effects?
a. Platelet count
b. Blood glucose level
c. Liver function studies
d. White blood cell and ANC count Ans: d. White blood cell
and ANC count
A client is ready for discharge and will be taking
phenobarbital sodium for an extended period. The nurse