A client is prescribed Acyclovir 350 mg IV. The medication available is a 500 mg vial. Package directions states to reconstitute the powder with 20 mL of sterile water and withdraw the desired amount. PART 2: After withdrawing the required dose, add the medication in 100 mL of IV fluid to run over 1 hour. Calculate the rate to set the IV pump.
The Correct Answer is ["114"]
Calculate the concentration of the reconstituted Acyclovir:
You have 500 mg of Acyclovir in 20 mL of sterile water.
Concentration = 500 mg / 20 mL = 25 mg/mL
Calculate the volume needed for the prescribed dose:
Desired dose: 350 mg
Volume (mL) = Desired dose / Concentration
Volume (mL) = 350 mg / 25 mg/mL = 14 mL
Calculate the total volume for infusion:
The 14 mL of Acyclovir is added to 100 mL of IV fluid.
Total volume = 14 mL + 100 mL = 114 mL
Determine the infusion time in hours:
The infusion is to run over 1 hour.
Calculate the IV pump rate in mL/hr:
IV pump rate (mL/hr) = Total volume (mL) / Infusion time (hr)
IV pump rate = 114 mL / 1 hr = 114 mL/hr
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["20"]
Explanation
Determine the concentration of the Phenobarbital elixir:
The drug is supplied as 15 mg per 5 mL.
Concentration = 15 mg / 5 mL = 3 mg/mL
Calculate the volume (in mL) needed for a 60 mg dose:
Use the concentration as a conversion factor:
Volume (mL) = Dose (mg) / Concentration (mg/mL) Volume (mL) = 60 mg / 3 mg/mL = 20 mL
Correct Answer is ["7.5"]
Explanation
Identify the Desired Dose:
The client needs 6 units of insulin per hour.
Identify the Available Concentration:
The solution has 200 units of insulin in 250 mL of NSS.
Set up the Proportion:
(Desired Dose / Available Concentration) = (Rate (mL/hr) / Volume (mL))
(6 units / 200 units) = (X mL / 250 mL)
Solve for X (the Rate):
Cross-multiply: 6 units x 250 mL = 200 units x X mL
1500 = 200X
X = 1500 / 200
X = 7.5 mL/hr
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