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 ["100"]
Explanation
1. Understand the given information:
- Prescribed infusion rate: 100 mL/hr
- Drop factor: 60 gtt/mL
2. Convert the infusion time to minutes:
- 1 hour = 60 minutes
3. Calculate the drip rate (gtt/min):
- (Total volume (mL) × Drop factor (gtt/mL)) / Time (minutes) = gtt/min
- (100 mL × 60 gtt/mL) / 60 minutes = 100 gtt/min
4. Round to the nearest whole number:
- The answer is already a whole number.
Therefore, the nurse should set the IV flow rate to deliver 100 gtt/min.
Correct Answer is ["217"]
Explanation
Total volume to be infused = 5200 mL
Total infusion time = 24 hours
Infusion rate for the entire 24 hours = 5200 mL / 24 hours = 216.67 mL/hr
Round to the nearest whole number for the first 8 hours: 217 mL/hr
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