ATI RN Protored Clinical Dosage Calculation 2023

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Sample questions from ATI RN Protored Clinical Dosage Calculation 2023

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

1. 1.A 6-year-old child weighing 20 kg is seen in an urgent care clinic with otitis media. The prescription is amoxicillin 40 mg/kg/day PO divided equally every 12 hours. The suspension contains 400 mg per 5 mL. How many mL should the nurse administer per dose?

   • A.2.5 mL
   • B.5 mL
   • C.10 mL
   • D.20 mL

   Rationale: The daily dose is 800 mg, so each of two doses is 400 mg, which equals 5 mL of this suspension. Option A gives half the prescribed dose, option C gives twice the dose, and option D gives four times the dose. Calculate the total daily dose, divide by the number of doses, then convert to volume.

2. 2.A 4-year-old child weighing 18 kg is prescribed acetaminophen 15 mg/kg PO once for fever. The liquid contains 120 mg per 5 mL. How many mL should the nurse give?

   • A.5.6 mL
   • B.7.5 mL
   • C.11.25 mL
   • D.15 mL

   Rationale: The dose is 270 mg, and 270 mg from a 120 mg per 5 mL liquid is 11.25 mL. Option A is based on an insufficient dose, option B provides 180 mg, and option D provides 360 mg. Use the prescribed weight-based dose before converting milligrams to milliliters.

3. 3.A 7-year-old child weighing 24 kg is admitted with a bacterial infection. The prescription is cefalexin 200 mg PO every 8 hours; the recommended range is 20 to 30 mg/kg/day divided into three doses. Is the prescription within the recommended range?

   • A.No; it is 8.3 mg/kg/day, below the range.
   • B.Yes; it is 25 mg/kg/day, within the range.
   • C.No; it is 33.3 mg/kg/day, above the range.
   • D.Yes; it is 600 mg/kg/day, within the range.

   Rationale: The total daily dose is 600 mg, and 600 mg divided by 24 kg is 25 mg/kg/day, within the 20 to 30 mg/kg/day range. Option A considers only one dose, option C overstates the daily amount, and option D incorrectly labels the total milligrams as mg/kg. Evaluate the total amount received in 24 hours when checking a divided-dose prescription.

4. 4.A 2-year-old child weighing 12 kg is prescribed ibuprofen 10 mg/kg PO once. The oral suspension contains 100 mg per 5 mL. How many mL should the nurse administer?

   • A.3 mL
   • B.6 mL
   • C.10 mL
   • D.12 mL

   Answer and rationale are in the full material.

5. 5.A 68-year-old client on a medical unit has an order for 1,000 mL of 0.9% sodium chloride to infuse over 8 hours. The client is stable, with blood pressure 124/72 mm Hg and clear lung sounds. What pump rate should the nurse set?

   • A.100 mL/hr
   • B.120 mL/hr
   • C.125 mL/hr
   • D.150 mL/hr

   Answer and rationale are in the full material.