A primary healthcare provider prescribes 15 g/day niacinamide to a client. Upon checking the medication bottle, the nurse finds that each tablet contains 500 mg and has a score mark. How should the nurse administer the prescribed dose?
Administer 1 tablet of medication once daily.
Administer 2 tablets of medication three times daily.
Administer half a tablet of medication once daily.
Administer 10 tablets of medication every 8 hours.
None
None
The Correct Answer is D
Choice A: One tablet contains 500 mg, which is far below the prescribed dose of 15 g/day. Administering one tablet daily would only provide 500 mg/day, which is insufficient.
Choice B: Each dose of 2 tablets provides 1000 mg (1 g), and giving this dose three times daily totals 3000 mg (3 g/day). This is significantly less than the required 15 g/day.
Choice C: Half a tablet would provide 250 mg/day, which is far below the prescribed dose of 15 g/day. This is inadequate and does not meet the prescription requirements.
Choice D:
The provider ordered 15 g/day of niacinamide. 15g=15,000mg
Tablet strength: Each tablet contains 500 mg. 15,000mg÷500mg=30tablets/day
Dosing schedule: The order is for a daily dose, divided evenly across the day. If given every 8 hours (3 doses/day): 30tablets÷3doses=10 tablets/dose
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Related Questions
Correct Answer is D
Explanation
A. 0.04 mg
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This is far too small.
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It might come from a miscalculation involving the concentration (1 mg/mL) and volume (5 mL), but incorrectly dividing again by 100.
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Not clinically reasonable because the patient would barely receive any drug.
B. 0.25 mg
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This is also incorrect.
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It could result from mistakenly dividing 5 mg by 20 minutes instead of 2 minutes.
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Again, far below the actual ordered rate.
C. 3.75 mg
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This is incorrect but closer.
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It might come from a misstep like subtracting 1.25 mg from the correct answer (2.5 mg) or misusing the concentration.
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Still not the right calculation.
D. 2.5 mg
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Correct answer.
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Direct calculation: 5 mg ÷ 2 minutes = 2.5 mg/min.
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Matches the ordered dose and administration time.
Correct Answer is D
Explanation
The toddler is ordered to receive 25 mg/kg of Principen IV over 30 minutes. The toddler weighs 22 lb, which is equivalent to 10 kg. To calculate the total amount of Principen the toddler should receive, multiply the weight by the dosage:
10 kg x 25 mg/kg = 250 mg
The Principen dose arrives from the pharmacy prepared in 50 mL of IV solution, which means there is 250 mg of Principen in 50 mL of solution. To calculate how many milliliters per hour the nurse should administer, we can use the following formula:
50 mL / 0.5 hour = X mL per hour X = 100 mL per hour
Therefore, the nurse should administer 100 mL of Principen per hour to the toddler.
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