HESI Fundamentals Exam Related

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A nurse is preparing to administer methylprednisolone 10 mg by IV bolus. The amount available is methylprednisolone injection 40-mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Do not use a trailing zero.)

  • A. 0.3 mL
  • B. 0.25 mL
  • C. 0.4 mL
  • D. 0.5 mL
Correct Answer: A

Rationale: To calculate the mL to administer, use the formula: Dose required (mg) · Stock concentration (mg/mL) = Volume to administer (mL). In this case, 10 mg · 40 mg/mL = 0.25 mL. However, when rounding to the nearest tenth, the answer should be 0.3 mL. Therefore, the nurse should administer 0.3 mL. Choice A is the correct answer. Choice B (0.25 mL) is the result obtained before rounding. Choice C (0.4 mL) and Choice D (0.5 mL) are incorrect calculations.