A nurse is preparing to administer acetaminophen 650 mg PO every 6 hr PRN for pain. The client last received the medication at 2 p.m. Which of the following times is the earliest the nurse can administer the next dose?
1900
1700
1500
2000
The Correct Answer is D
A. 1900: Administering the medication at 7 p.m. would be 5 hours after the last dose at 2 p.m., which is too soon. Acetaminophen should be given no more frequently than every 6 hours to avoid toxicity.
B. 1700: Giving the medication at 5 p.m. is only 3 hours after the previous dose, which is unsafe and exceeds the recommended dosing frequency.
C. 1500: Administering at 3 p.m. is just 1 hour after the last dose, which is far too early and could result in an overdose.
D. 2000: Administering the next dose at 8 p.m. is 6 hours after the 2 p.m. dose, meeting the prescribed interval and ensuring safe timing between doses while providing effective pain management.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. in: The abbreviation “in” is commonly used to indicate inches and is widely recognized in clinical and household contexts. It does not pose a risk of misinterpretation in medication administration.
B. tsp: “tsp” stands for teaspoon and is a standard, accepted abbreviation for liquid measurements. It is safe for use when teaching patients or administering medications.
C. OZS: The correct abbreviation for ounces is “oz,” not “OZS.” Using “OZS” can lead to misinterpretation and dosing errors, making this abbreviation unsafe and in need of clarification.
D. tbsp: “tbsp” stands for tablespoon and is an accepted and widely understood abbreviation. It is standard for measuring liquid medications and does not require questioning.
Correct Answer is A
Explanation
A. I will cut one tablet in half, then take one and one-half tablets morning and evening: Each tablet is 25 mg, so one and a half tablets equals 37.5 mg. Taking this dose twice daily matches the provider’s order for safe and accurate dosing.
B. I need to get a different dose of medication from the pharmacy: A different strength is not necessary because the prescribed dose can be achieved by splitting the 25 mg tablet appropriately.
C. I will take two tablets in the morning: Two tablets equal 50 mg, which exceeds the ordered 37.5 mg and could result in an overdose.
D. I will cut one tablet in half, then take one and one-half tablets daily: Taking one and a half tablets only once a day provides half the prescribed total daily dose, which is insufficient for therapeutic effect.
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