ATI DOSAGE CALCULATION RN
MEDICAL SURGICAL PROCTORED
ASSESSMENT3.1
Prepare for the ATI RN Fundamentals Proctored Exam 2026 with this
comprehensive collection of Next Generation NCLEX (NGN) style
questions and realistic case scenarios. Contains Case Studies with
Answers and Step by step Explanations.
Total Questions: 30
Showing 30 questions
Question 1:
A nurse is preparing to administer hydrochlorothiazide 150 mg PO daily in 3
equally divided doses. Available is hydrochlorothiazide oral solution is 50 mg/5
mL. How many mL should the nurse administer per dose? (Round the answer to
the nearest whole number. Use a leading zero if it applies. Do not use a trailing
zero.)
Explanation
Correct Answer: 5
Determine the single dose:
Total daily dose = 150 mg
Divided into 3 equal doses = 150 mg / 3 = 50 mg per dose
Determine the volume to administer:
Available concentration = 50 mg/5 mL
Desired dose = 50 mg
Volume to administer = (Desired dose / Available concentration) * Volume per dose
Volume to administer = (50 mg / 50 mg/mL) * 5 mL = 5 mL
Therefore, the nurse should administer 5 mL per dose.
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Question 2:
A nurse is preparing to administer phenytoin 200 mg via a gastrostomy tube.
Available is phenytoin oral suspension 125 mg/5 mL. How many mL 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.)
Explanation
Correct Answer: 8
Desired dose: 200 mg
Available concentration: 125 mg/5 mL
To find the volume to administer, we can use the following formula:
Volume to administer (mL) = Desired dose (mg) / Concentration (mg/mL) * Volume per
dose
Volume to administer = (200 mg / 125 mg/mL) * 5 mL = 8 mL
Therefore, the nurse should administer 8 mL of phenytoin oral suspension.
A
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Question 3:
A nurse is preparing to administer methylprednisolone sodium succinate 30
mg/kg via intermittent IV bolus to a client who weighs 169 lb. Available is
methylprednisolone sodium succinate 125 mg/mL. How many mL 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.)
Explanation
Correct Answer: 18
Step 1: Convert pounds to kilograms
1 lb = 0.453592 kg
169 lb * 0.453592 kg/lb = 76.65 kg
Step 2: Calculate the total dose of methylprednisolone
Dose = 30 mg/kg * 76.65 kg = 2299.5 mg
Step 3: Calculate the volume to administer
The medication concentration is 125 mg/mL.
Volume = Total dose / Concentration = 2299.5 mg / 125 mg/mL = 18.396 mL
Step 4: Round to the nearest whole number
Volume = 18 mL
Therefore, the nurse should administer 18 mL of methylprednisolone sodium
succinate.
A
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MEDICAL SURGICAL PROCTORED
ASSESSMENT3.1
Prepare for the ATI RN Fundamentals Proctored Exam 2026 with this
comprehensive collection of Next Generation NCLEX (NGN) style
questions and realistic case scenarios. Contains Case Studies with
Answers and Step by step Explanations.
Total Questions: 30
Showing 30 questions
Question 1:
A nurse is preparing to administer hydrochlorothiazide 150 mg PO daily in 3
equally divided doses. Available is hydrochlorothiazide oral solution is 50 mg/5
mL. How many mL should the nurse administer per dose? (Round the answer to
the nearest whole number. Use a leading zero if it applies. Do not use a trailing
zero.)
Explanation
Correct Answer: 5
Determine the single dose:
Total daily dose = 150 mg
Divided into 3 equal doses = 150 mg / 3 = 50 mg per dose
Determine the volume to administer:
Available concentration = 50 mg/5 mL
Desired dose = 50 mg
Volume to administer = (Desired dose / Available concentration) * Volume per dose
Volume to administer = (50 mg / 50 mg/mL) * 5 mL = 5 mL
Therefore, the nurse should administer 5 mL per dose.
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Question 2:
A nurse is preparing to administer phenytoin 200 mg via a gastrostomy tube.
Available is phenytoin oral suspension 125 mg/5 mL. How many mL 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.)
Explanation
Correct Answer: 8
Desired dose: 200 mg
Available concentration: 125 mg/5 mL
To find the volume to administer, we can use the following formula:
Volume to administer (mL) = Desired dose (mg) / Concentration (mg/mL) * Volume per
dose
Volume to administer = (200 mg / 125 mg/mL) * 5 mL = 8 mL
Therefore, the nurse should administer 8 mL of phenytoin oral suspension.
A
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Question 3:
A nurse is preparing to administer methylprednisolone sodium succinate 30
mg/kg via intermittent IV bolus to a client who weighs 169 lb. Available is
methylprednisolone sodium succinate 125 mg/mL. How many mL 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.)
Explanation
Correct Answer: 18
Step 1: Convert pounds to kilograms
1 lb = 0.453592 kg
169 lb * 0.453592 kg/lb = 76.65 kg
Step 2: Calculate the total dose of methylprednisolone
Dose = 30 mg/kg * 76.65 kg = 2299.5 mg
Step 3: Calculate the volume to administer
The medication concentration is 125 mg/mL.
Volume = Total dose / Concentration = 2299.5 mg / 125 mg/mL = 18.396 mL
Step 4: Round to the nearest whole number
Volume = 18 mL
Therefore, the nurse should administer 18 mL of methylprednisolone sodium
succinate.
A
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