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.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
“Inject air into the regular insulin first.” When mixing regular insulin and NPH insulin in the same syringe, the nurse should instruct the client to inject air into the NPH insulin vial first, then inject air into the regular insulin vial.
After that, the client should draw up the regular insulin into the syringe first, followed by the NPH insulin.
Choice B is not correct because NPH insulin should not be shaken vigorously as it can damage the insulin molecules.
Choice C is not correct because the regular insulin should be drawn up into the syringe first.
Choice D is not correct because regular insulin is a clear solution and should not appear cloudy.
Correct Answer is A
Explanation
The nurse should instruct the patient to avoid taking verapamil with grapefruit.
Studies have demonstrated an interaction between verapamil and grapefruit juice, which is likely due to an inhibition of intestinal metabolism resulting in increased oral bioavailability1.
This means that grapefruit can interfere with the enzymes that break down verapamil in your digestive system, potentially leading to dangerous health problems2.
Choices B, C, and D are incorrect because there is no known interaction between verapamil and spinach, broccoli, or carrots.
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