A nurse is preparing to administer digoxin 8 mcg/kg/day PO to divide equally every 12 hr for a preschooler who weighs 33 lb. Available is digoxin elixir 0.05 mg/mL. How many mL should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["1.2"]
Here's how to calculate the digoxin dosage:
1. Convert the child's weight to kilograms:
- There are approximately 2.2 pounds in 1 kilogram.
- 33 lbs / 2.2 lbs/kg = 15 kg
2. Calculate the total daily dose:
- The child needs 8 mcg of digoxin per kilogram of weight per day.
- 8 mcg/kg * 15 kg = 120 mcg
3. Calculate the dose per administration:
- The daily dose is divided into two doses (every 12 hours).
- 120 mcg / 2 = 60 mcg
4. Convert the dose per administration to milligrams:
- There are 1000 mcg in 1 mg.
- 60 mcg / 1000 mcg/mg = 0.06 mg
5. Calculate the volume to administer:
- The digoxin elixir has a concentration of 0.05 mg/mL.
- 0.06 mg / 0.05 mg/mL = 1.2 mL
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["200"]
Explanation
Understanding the Problem
We need to administer 100 mL of solution over 30 minutes.
We need to convert the rate to mL/hour.
Calculations
Convert minutes to hours:
30 minutes = 30/60 hours = 0.5 hours
Calculate the infusion rate:
Infusion rate (mL/hr) = Total volume (mL) / Time (hr)
Infusion rate = 100 mL / 0.5 hr = 200 mL/hr
Answer
The nurse should set the IV pump to deliver 200 mL/hr.
Correct Answer is ["120"]
Explanation
The nurse is administering Ringer’s lactate by continuous IV infusion at a rate of 120 mL/hr. The drop factor of the manual IV tubing is 60 gtt/mL.
To find out how many gtt/min the IV flow rate should be set to, we can use the formula:
Flowrate(gtt/min) = Volume(mL/hr) × Dropfactor(gtt/mL) / 60min/hr
Substituting the given values:
Flowrate(gtt/min) = 120mL/hr × 60gtt/mL / 60min/hr = 120gtt/min
So, the nurse should set the manual IV infusion to deliver 120 gtt/min.
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