The healthcare provider prescribes ampicillin 140 mg intravenously (IV) every 8 hours for a child with meningitis. The vial is labeled "ampicillin 250 mg for intravenous (IV) use" and requires reconstitution with 83 mL of sterile normal saline for injection to yield a total solution concentration of 30 mg/mL. How many mL should the nurse administer?
(Enter numeric value only. If rounding is required, round to the nearest tenth.)
The Correct Answer is ["4.7"]
The healthcare provider prescribes ampicillin 140 mg intravenously (IV) every 8 hours for a child with meningitis.
The vial is labeled "ampicillin 250 mg for intravenous (IV) use" and requires reconstitution with 83 mL of sterile normal saline for injection to yield a total solution concentration of 30 mg/mL.
This means that for every mL of the solution, there is 30 mg of ampicillin.
To administer a dose of 140 mg, the nurse should give the child 4.7 mL of the solution (140 mg ÷ 30 mg/mL = 4.7 mL).
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["20"]
Explanation
The client is currently receiving an infusion labeled as 5% Dextrose Injection 500 mL with heparin sodium 25,000 Units. The concentration of heparin in the IV solution is 50 units/mL (25,000 units / 500 mL).
A prescription is received to change the rate of the infusion to heparin 1,000 units/hour.
Since the concentration of heparin in the IV solution is 50 units/mL, the nurse should program the infusion pump to deliver 20 mL/hour of the IV solution (1,000 units/hour / 50 units/mL).
Correct Answer is ["1.0"]
Explanation
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Calculate the total dose:
- The client weighs 59 kg and the dose is 5 mcg/kg, so the total dose is 59 kg * 5 mcg/kg = 295 mcg.
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Calculate the volume to administer:
- The medication is available at a concentration of 300 mcg/mL.
- To find the volume, divide the total dose by the concentration: 295 mcg / 300 mcg/mL = 0.9833 mL.
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Round to the nearest tenth:1.0mL
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