Difficulty: Medium
Average Score: 73%
Simulated
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?
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 ├â┬À 2.2 = 50 kg. Dosage parameters: 0.1 mg/kg/dose ├âÔÇö 50 kg = 5 mg; 0.2 mg/kg/dose ├âÔÇö 50 kg = 10 mg. Dosage is within the safe dosage range.