A nurse is preparing to administer digoxin 0.25 mg PO to a school-age child. Available is digoxin elixir 50 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["0.005"]
1. Determine the desired dose and the available concentration:
- Desired dose: 0.25 mg
- Available concentration: 50 mg/mL
2. Set up the calculation:
- We need to find out how many mL contain 0.25 mg of digoxin. We can use the following formula:
- (Desired Dose) / (Available Concentration) = Volume to Administer
3. Perform the calculation:
- 0.25 mg / 50 mg/mL = 0.005 mL
4. Round the answer:
- The answer is 0.005 mL.
- Since the question asks to round to the nearest whole number and use a leading zero if it applies, and not use a trailing zero, and since this number is less than 1, we add a leading zero.
- The answer is 0.005mL.
Therefore, the nurse should administer 0.005 mL of digoxin elixir.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.5"]
Explanation
Identify the given information:
Dose of methimazole: 0.3 mg/kg/day
Weight of the child: 55 lb
Concentration of methimazole tablets: 5 mg/tablet
Convert the child's weight from pounds to kilograms:
1 lb ≈ 0.453592 kg
Calculate the total daily dose of methimazole in mg:
Total daily dose = Dose/kg/day x Weight (kg)
Substitute the values:
Total daily dose = 0.3 mg/kg/day x 55 lb x (0.453592 kg/1 lb)
Total daily dose ≈ 7.48 mg
Calculate the dose per dose (every 8 hours):
Dose per dose = Total daily dose / 3
Substitute the values:
Dose per dose = 7.48 mg / 3
Dose per dose ≈ 2.49 mg
Calculate the number of tablets to be administered:
Number of tablets = Dose per dose (mg) / Concentration (mg/tablet)
Substitute the values:
Number of tablets = 2.49 mg / 5 mg/tablet
Number of tablets ≈ 0.498
Round the answer to the nearest tenth:
Number of tablets ≈ 0.5 tablets
Correct Answer is ["500"]
Explanation
Step 1: Identify the given information:
Volume of the solution: 125 mL
Infusion time: 15 minutes
Step 2: Convert the infusion time to hours:
15 minutes = 15/60 hours = 0.25 hours
Step 3: Calculate the infusion rate in mL/hr:
Infusion rate = Volume / Time
Step 4: Substitute the values:
Infusion rate = 125 mL / 0.25 hr
Step 5: Calculate the result:
Infusion rate = 500 mL/hr
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