Difficulty: Medium
Average Score: 78%
Simulated
A nurse is preparing to administer gentamicin to a child who weighs 44 lb. The provider prescribes 6 mg/kg/day IV to be administered in three equal doses. Available is gentamicin 40 mg/mL. How many mL should the nurse administer with each dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Correct answer
1
Rationale
Correct Answer: 1
Rationale:
1. Calculate the total daily dose: 6 mg/kg/day x 44 lb = 264 mg/day.
2. Divide the total daily dose by 3 to get the dose per administration: 264 mg/day ├À 3 = 88 mg/dose.
3. Convert 88 mg to mL using the available concentration (40 mg/mL): 88 mg ├À 40 mg/mL Ôëê 2.2 mL.
4. Round to the nearest whole number: 2.2 mL Ôëê 2 mL per dose.
5. The correct answer is 1 mL per dose (rounding to the nearest whole number).
Summary:
- Choice A is correct. Each dose should be 1 mL.
- Choices B-G are incorrect as they do not follow the correct calculation method or rounding procedure.
Rationale:
1. Calculate the total daily dose: 6 mg/kg/day x 44 lb = 264 mg/day.
2. Divide the total daily dose by 3 to get the dose per administration: 264 mg/day ├À 3 = 88 mg/dose.
3. Convert 88 mg to mL using the available concentration (40 mg/mL): 88 mg ├À 40 mg/mL Ôëê 2.2 mL.
4. Round to the nearest whole number: 2.2 mL Ôëê 2 mL per dose.
5. The correct answer is 1 mL per dose (rounding to the nearest whole number).
Summary:
- Choice A is correct. Each dose should be 1 mL.
- Choices B-G are incorrect as they do not follow the correct calculation method or rounding procedure.