Dosage Calculations PN Fundamentals Proctored Assessment 3.2

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Sample questions from Dosage Calculations PN Fundamentals Proctored Assessment 3.2

This material has 90 questions with answers and rationales. Here are the first 5.

1. 1.A 68-year-old patient in a medical unit has a temperature of 38.1 C, blood pressure of 128/76 mm Hg, and a prescription for acetaminophen 650 mg orally. The medication supply is 325-mg tablets. How many tablets should the practical nurse administer?

   • A.1 tablet
   • B.1.5 tablets
   • C.2 tablets
   • D.2.5 tablets

   Rationale: The prescribed dose is 650 mg, and each tablet contains 325 mg, so 650 / 325 = 2 tablets. One tablet provides 325 mg, while 1.5 tablets provides 487.5 mg and 2.5 tablets provides 812.5 mg. Match the prescribed dose to the amount in each dosage unit before administering.

2. 2.A 52-year-old patient in a rehabilitation facility reports pain rated 6/10; vital signs are stable. The prescription is ibuprofen 600 mg orally, and the supply is 200-mg tablets. How many tablets should the nurse give?

   • A.2 tablets
   • B.3 tablets
   • C.4 tablets
   • D.6 tablets

   Rationale: Divide the prescribed dose, 600 mg, by the amount per tablet, 200 mg, to obtain 3 tablets. Two tablets provide 400 mg, and 4 or 6 tablets exceed the prescribed dose. Verify the total dose rather than selecting a tablet count by appearance.

3. 3.A 74-year-old patient in a long-term care facility has a blood pressure of 132/78 mm Hg and a prescription for furosemide 40 mg orally. The supply is 20-mg tablets. How many tablets should the nurse administer?

   • A.1 tablet
   • B.2 tablets
   • C.3 tablets
   • D.4 tablets

   Rationale: The prescribed 40 mg divided by 20 mg per tablet equals 2 tablets. One tablet gives only 20 mg, while 3 and 4 tablets give 60 mg and 80 mg. Use the ordered dose and the medication strength to calculate the number of units.

4. 4.A 44-year-old patient in an outpatient clinic has a temperature of 37.0 C and a prescription for amoxicillin 0.5 g orally. The supply is 250-mg capsules. How many capsules should the nurse administer?

   • A.1 capsule
   • B.2 capsules
   • C.3 capsules
   • D.4 capsules

   Answer and rationale are in the full material.

5. 5.A 39-year-old patient in a clinic has nausea, stable vital signs, and a prescription for ondansetron 8 mg orally. The liquid contains 4 mg per 5 mL. How many milliliters should the nurse administer?

   • A.5 mL
   • B.8 mL
   • C.10 mL
   • D.20 mL

   Answer and rationale are in the full material.