A nurse is preparing to administer 200 mg of phenytoin PO. If the available phenytoin oral suspension is 125 mg/5 mL, how many mL should the nurse administer?
The Correct Answer is ["8 "]
The nurse should administer 8 mL of phenytoin. Here’s the calculation: Step 1: The total dosage required is 200 mg.
Step 2: Each 5 mL of the oral suspension contains 125 mg of phenytoin.
Step 3: So, the volume to be administered is (200 mg ÷ 125 mg/5mL) = 8 mL.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A rationale:
The label states to add 3.5 mL of diluent for reconstitution, not 5 mL. So, choice A is incorrect.
Choice B rationale:
After reconstitution, the vial will contain 1 gram of medication, not 500 mg. So, choice B is incorrect.
Choice C rationale:
The label does state to use the solution within 1 hour of reconstitution. So, choice C is correct.
Choice D rationale:
The label states the medication can be used for IM or IV, not only IM. So, choice D is incorrect.
So, the correct answer is C. Administer the medication within 1 hr of reconstitution.
Correct Answer is ["10 "]
Explanation
Step 1 is to calculate the volume of codeine to administer. Given that the available codeine oral solution is 10 mg/5 mL and the nurse needs to administer 20 mg, the calculation is as follows: 20 mg ÷ (10 mg/5 mL) = 10 mL4
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