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 ["75"]
Explanation
The healthcare provider prescribes an IV solution of isoproterenol 1 mg in 250 mL of Dextrose in Water (D/W) at a rate of 300 mcg/hour.
Since 1 mg is equal to 1000 mcg, the solution contains 1000 mcg of isoproterenol in 250 mL.
This means that for every mL of the solution, there is 4 mcg of isoproterenol (1000 mcg / 250 mL = 4 mcg/mL).
To administer a dose of 300 mcg/hour, the nurse should program the infusion pump to deliver 75 mL/hour (300 mcg/hour ÷ 4 mcg/mL = 75 mL/hour).
Correct Answer is ["239"]
Explanation
The child receives a prescription for asparaginase 4,780 IU IV.
The vial is labeled "Asparaginase 10,000 IU single-use vial" and for IV use, it should be reconstituted in 5 mL.
Since the child needs 4,780 IU of asparaginase and the vial contains 10,000 IU, the nurse should administer 2.39 mL of medication (4,780 IU / 10,000 IU * 5 mL).
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