NCLEX RN Physiological Integrity Related

Review NCLEX RN Physiological Integrity related questions and content

The nurse is checking postoperative prescriptions and planning care for a 110-pound child after spinal fusion. Morphine sulfate, 8 mg subcutaneously every 4 hours PRN for pain, is prescribed. The pediatric medication reference states that the safe dose is 0.1 to 0.2 mg/kg/dose every 3 to 4 hours. From this information, the nurse determines what about the prescription?

  • A. The dose is too low.
  • B. The dose is too high.
  • C. The dose is within the safe dosage range.
  • D. There is not enough information to determine the safe dose.
Correct Answer: C

Rationale: Use the formula to determine the dosage parameters. Convert pounds to kilograms by dividing weight by 2.2. Therefore, 110 lb ÷ 2.2 = 50 kg. Dosage parameters: 0.1 mg/kg/dose × 50 kg = 5 mg; 0.2 mg/kg/dose × 50 kg = 10 mg. Dosage is within the safe dosage range.