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Practice Question

The healthcare provider prescribes interferon bela-1b 0.0625 mg SUBO every other day for a client with multiple sclerosis.The nurse reconstitutes the single-use vial of powder labeled, "0.3 mg with 2 mL of sterile water. How many mil should the nurse administer to the client? (Enter the numerical value only. If rounding is required, sound to the nearest hundredth.)

Answer Choices:

Correct Answer:

0.42

Rationale:

✏️ Prescription Details:

Ordered dose: 0.0625 mg

Available concentration: 0.3 mg reconstituted with 2 mL sterile water

✏️ Step 1: Set up a proportion using the available concentration to determine how many mL contain 0.0625 mg:

0.0625 mg/0.3 mg=x/2 mL

✏️ Step 2: Cross-multiply and solve for x (the volume in mL): 0.0625×2=0.125

0.125​/3=0.4167 mL

✏️Step 3: Round to the nearest hundredth as instructed: 0.42 mL

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This question is from Hesi-RN Dosage D441 which contains 55 questions.

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Hesi-RN Dosage D441

55 Questions

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Question Details
  • Category: RN Nursing Exam(s)
  • Subcategory: HESI Exam(s)
  • Domain: Hesi Dosage Calculations
  • Answer Choices: 1
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