ATI Dosage Calculation RN Fundamentals Proctored Assessment

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Sample questions from ATI Dosage Calculation RN Fundamentals Proctored Assessment

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

1. 1.A nurse is preparing to administer acetaminophen 650 mg PO. Available are acetaminophen 325 mg tablets. How many tablets should the nurse administer?

   • A.0.5 tablet
   • B.1 tablet
   • C.2 tablets
   • D.3 tablets

   Rationale: Divide the prescribed dose by the available dose: 650 mg / 325 mg = 2 tablets. One-half tablet supplies 162.5 mg, and 1 tablet supplies 325 mg. Three tablets supply 975 mg, which exceeds the prescription. For tablets, verify that the calculated quantity delivers the prescribed dose.

2. 2.A nurse is preparing to administer furosemide 30 mg PO. Available are furosemide 20 mg scored tablets that may be split. How many tablets should the nurse administer?

   • A.1.5 tablets
   • B.0.67 tablet
   • C.1 tablet
   • D.2 tablets

   Rationale: The calculation is 30 mg / 20 mg = 1.5 tablets. The 0.67-tablet option results from reversing the desired and available doses. One tablet supplies only 20 mg, whereas 2 tablets supply 40 mg. A fractional tablet dose is appropriate only when the formulation can be divided accurately and safely.

3. 3.A nurse is preparing to administer digoxin 0.125 mg PO. Available are digoxin 125 mcg tablets. How many tablets should the nurse administer?

   • A.0.1 tablet
   • B.0.5 tablet
   • C.10 tablets
   • D.1 tablet

   Rationale: Convert 0.125 mg to 125 mcg, then divide 125 mcg by 125 mcg per tablet to obtain 1 tablet. The 0.1-tablet option supplies only 12.5 mcg, and 0.5 tablet supplies 62.5 mcg. Ten tablets supply 1,250 mcg and represent a major overdose. Convert the prescribed and available doses to the same unit before calculating.

4. 4.A nurse is preparing to administer amoxicillin 375 mg PO. Available is amoxicillin suspension 250 mg/5 mL. How many mL should the nurse administer?

   • A.3 mL
   • B.7.5 mL
   • C.5 mL
   • D.15 mL

   Answer and rationale are in the full material.

5. 5.A client is prescribed potassium chloride 30 mEq PO. Available is potassium chloride oral solution 20 mEq/15 mL. How many mL should the nurse administer?

   • A.10 mL
   • B.15 mL
   • C.22.5 mL
   • D.30 mL

   Answer and rationale are in the full material.