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Practice Question

A nurse is preparing to administer prednisolone 2 mg/kg/day PO divided in equal doses every 12 hr to a toddler who has acute asthma and weighs 26 lb. Available is prednisolone syrup 15 mg/5 mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Answer Choices:

Correct Answer:

3.9

Rationale:

✍️ Formula:

➡️ kg = lb ÷ 2.2

➡️ Daily dose (mg) = mg/kg/day × kg

➡️ Dose per dose (mg) = daily dose ÷ number of doses per day

➡️ Volume (mL) = (dose per dose ÷ stock mg) × stock mL

✍️ Given:

➡️ Weight = 26 lb

➡️ Ordered dose = 2 mg/kg/day PO

➡️ Frequency = q12 hr → 2 doses/day

➡️ Stock = 15 mg/5 mL

✍️ Calculation:

➡️ kg = 26 ÷ 2.2 ≈ 11.8 kg

➡️ Daily dose = 2 × 11.8 ≈ 23.6 mg/day

➡️ Dose per dose = 23.6 ÷ 2 ≈ 11.8 mg

➡️ Stock concentration = 15 mg/5 mL = 3 mg/mL

➡️ Volume = 11.8 ÷ 3

↦ 3.9 mL per dose

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This question is from Dosage Calculation PN Pediatric Nursing Proctored Assessment 3.2 which contains 32 questions.

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Dosage Calculation PN Pediatric Nursing Proctored Assessment 3.2

32 Questions

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Question Details
  • Category: RN Nursing Exam(s)
  • Subcategory: ATI Exam(s)
  • Domain: RN ATI Pediatrics
  • Answer Choices: 1
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