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 ["13"]
Explanation
Calculations
Calculate the total minutes:
24 hours = 24 X 60 minutes = 1440 minutes
Calculate the infusion rate in mL/min:
Infusion rate (mL/min) = Total volume (mL) / Total time (min)
Infusion rate = 1200 mL / 1440 min = 0.8333 mL/min
Calculate the drip rate:
Drip rate (gtt/min) = Infusion rate (mL/min) X Drop factor (gtt/mL)
Drip rate = 0.8333 mL/min X 15 gtt/mL = 12.5 gtt/min
The nurse should set the manual IV infusion to deliver 13 gtt/min.
Correct Answer is ["0.75"]
Explanation
Desired dose = 6 mg
Concentration = 8 mg/mL
To calculate the volume to administer:
Volume (mL) = Desired dose (mg) / Concentration (mg/mL)
Volume = 6 mg / 8 mg/mL = 0.75 mL
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