A nurse is preparing to administer phenytoin 75 mg PO. Available is phenytoin suspension 25 mg/5 mL. How many mL should the nurse administer?
(Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["15"]
Step 1: Determine how many milligrams are in each milliliter of the suspension.
- Total milligrams ÷ Total milliliters
- 25 mg ÷ 5 mL = 5 mg/mL
Step 2: Determine how many milliliters are needed to administer 75 mg.
- Desired milligrams ÷ Milligrams per milliliter
- 75 mg ÷ 5 mg/mL = 15 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale:
Pseudoparkinsonism mimics the symptoms of Parkinson’s disease but is not typically characterized by choreiform movements, lip smacking, and spastic facial distortions.
Choice B rationale:
Tardive dyskinesia, a potential side effect of long-term use of chlorpromazine, is characterized by involuntary movements such as lip smacking and facial distortions.
Choice C rationale:
Akathisia is characterized by a sense of restlessness and a compulsion to move, not typically by the symptoms described.
Choice D rationale:
Dystonia involves involuntary muscle contractions and distortions but not typically the specific symptoms described.
So, the correct answer is B.
Correct Answer is ["10"]
Explanation
Step 1 is to calculate the number of tablets needed to administer 225 mg of desipramine. This is done by dividing the prescribed dose (225 mg) by the strength of each tablet (75 mg). So, 225 mg ÷ 75 mg/tablet = 3 tablets.
So, the correct answer is 3 tablets.
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