A nurse is preparing to administer dexamethasone 3 mg PO.
Available are dexamethasone 1.5 mg tablets.
How many tablets 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.).
1.
2.
3.
4.
The Correct Answer is B
The nurse should administer 2 tablets.
Since each tablet contains 1.5 mg of dexamethasone, to administer a dose of 3 mg, the nurse should give 3 mg / 1.5 mg/tablet = 2 tablets.
Choice A is incorrect because 1 tablet would only provide a dose of 1.5 mg.
Choice C is incorrect because 3 tablets would provide a dose of 4.5 mg.
Choice D is incorrect because 4 tablets would provide a dose of 6 mg.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
To calculate the rate at which the volumetric pump should be set to deliver the intravenous fluids, you need to divide the total volume of fluid (3,000 mL) by the total time in hours (24 hours).
This gives you 3,000 mL ÷ 24 hours = 125 mL/hr.
Therefore, the nurse should set the volumetric pump to deliver 125 mL of fluid per hour.
Choice B is incorrect because 130 mL/hr would result in a total of 3,120 mL over 24 hours.
Choice C is incorrect because 135 mL/hr would result in a total of 3,240 mL over 24 hours.
Choice D is incorrect because 140 mL/hr would result in a total of 3,360 mL over 24 hours.
Correct Answer is B
Explanation
The nurse should administer 2 tablets of lorazepam 1 mg to give a total dose of 2 mg.
This is calculated by dividing the desired dose (2 mg) by the available dose (1 mg/tablet) to get the number of tablets needed: 2 mg / (1 mg/tablet) = 2 tablets.
Choice A, 1 tablet, is not the correct answer because it would only provide a total dose of 1 mg.
Choice C, 3 tablets, is not the correct answer because it would provide a total dose of 3 mg.
Choice D, 4 tablets, is not the correct answer because it would provide a total dose of 4 mg.
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