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).
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Related Questions
Correct Answer is ["56"]
Explanation
Answer: 56 gtt/min.
Rationale:
To calculate the infusion rate in gtt/min, we'll use the following formula:
Infusion Rate (gtt/min) = Volume (mL) / Time (min) x Drop Factor (gtt/mL)
1. Convert volume to mL:
2 liters = 2000 mL
2. Convert time to minutes:
12 hours = 12 x 60 = 720 minutes
3. Plug in the values:
Infusion Rate (gtt/min) = 2000 mL / 720 min x 20 gtt/mL
4. Calculate:
Infusion Rate (gtt/min) ≈ 55.56 gtt/min
5. Round to the nearest whole number:
Infusion Rate (gtt/min) ≈ 56 gtt/min
Therefore, the nurse should regulate the infusion to 56 gtt/min.
Correct Answer is ["167"]
Explanation
The client with pneumonia is receiving a secondary infusion of azithromycin 500 mg in 250 mL of normal saline (NS) to be infused in 90 minutes.
To calculate the infusion rate in mL/hour, we need to divide the total volume of the infusion (250 mL) by the infusion time in hours (90 minutes / 60 minutes/hour = 1.5 hours).
The nurse should program the infusion pump to deliver 167 mL/hour (250 mL / 1.5 hours).
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