A nurse is preparing to administer digoxin 8 mg/kg/day PC divided equally every 12 hr for a preschooler who weighs 33 b. 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"]
Step-by-step solution:
1. Convert pounds to kilograms:
1 lb = 0.453592 kg
33 lb x 0.453592 kg/lb = 14.97 kg
2. Calculate the total daily dose of digoxin:
Total daily dose = dose per kg/day x weight in kg = 8 mcg/kg/day x 14.97 kg = 119.76 mcg/day
3. Calculate the dose per administration:
Since the medication is divided into 2 doses per day,
Dose per administration = Total daily dose / number of doses = 119.76 mcg/day / 2 doses = 59.88 mcg/dose
4. Convert mcg to mg:
1 mg = 1000 mcg
59.88 mcg = 0.05988 mg
5. Calculate the volume to administer:
The medication concentration is 0.05 mg/mL.
Volume = Dose per administration / Concentration = 0.05988 mg / 0.05 mg/mL = 1.1976 mL
6. Round to the nearest tenth:
Volume = 1.2 mL
Therefore, the nurse should administer 1.2 mL of digoxin per dose.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Enoxaparin 30 mg subcutaneous every 12 hours:
Enoxaparin is correctly prescribed at 30 mg every 12 hours for conditions like deep vein thrombosis. This dosing regimen is standard and does not require clarification.
B. Hydrochlorothiazide 50 mg PO twice daily with meals:
Hydrochlorothiazide is typically administered once daily, but doses up to 50 mg twice daily can be appropriate for specific conditions. This prescription is higher than usual but still within potential therapeutic ranges, so clarification is not immediately necessary unless there are other concerns.
C. Lovastatin 20 mg PO once daily:
Lovastatin at 20 mg once daily is a common dose for managing hyperlipidemia. This dosage is standard and does not require clarification.
D. Diltiazem 30 mg PO hold for apical pulse rate less than 50/min:
Diltiazem is a calcium channel blocker often used to manage hypertension or angina. The dose of 30 mg is quite low for this medication, and the instruction to hold if the apical pulse rate is below 50/min is standard. However, the very low dose of 30 mg might be unusual and needs clarification to ensure it is appropriate for the patient's condition and to prevent potential adverse effects.
Correct Answer is ["84"]
Explanation
The nurse should administer 8.4 mg of enoxaparin per dose.
Calculations:
Convert pounds to kilograms:
185 lb x 0.453592 kg/lb = 83.91 kg
Calculate the enoxaparin dose:
1 mg/kg x 83.91 kg = 83.91 mg
Round to the nearest tenth:
83.91 mg ≈ 84 mg
Therefore, the nurse should administer 84 mg of enoxaparin per dose.
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