ATI Dosage Calculation PN Adult medical surgical PROCTORED ASSESSMENT
3.2 Questions and Answers
,Question 1: A nurse is preparing to administer levothyroxine 0.1 mg PO
daily. Available is levothyroxine 50 mcg tablets. How many tablets should
the nurse administer?
A) 1 tablet
B) 2 tablets
C) 0.5 tablet
D) 1.5 tablets
Correct ,,,,,answer,,,: B) 2 tablets
Rationale: First convert 0.1 mg to mcg: 0.1 mg × 1000 = 100 mcg. Then
calculate tablets: 100 mcg ÷ 50 mcg/tablet = 2 tablets.
Question 2: A nurse is preparing to administer digoxin 0.25 mg PO daily.
Available is digoxin elixir 0.05 mg/mL. How many mL should the nurse
administer per dose?
A) 2 mL
B) 3 mL
C) 4 mL
D) 5 mL
Correct ,,,,,answer,,,: D) 5 mL
Rationale: Calculate using ratio/proportion: 0.05 mg/1 mL = 0.25 mg/x mL
→ 0.05x = 0.25 → x = 5 mL.
,Question 3: A nurse is preparing to administer amoxicillin 30 mg/kg/day
PO divided in equal doses every 12 hr to a client who weighs 55 lb.
Available is amoxicillin oral suspension 400 mg/5 mL. How many mL
should the nurse administer per dose? (Round to the nearest whole
number.)
A) 3 mL
B) 4 mL
C) 5 mL
D) 6 mL
Correct ,,,,,answer,,,: C) 5 mL
Rationale: Convert weight to kg: 55 lb ÷ 2.2 = 25 kg. Daily dose: 30 mg/kg
× 25 kg = 750 mg/day. Per dose (every 12 hr = 2 doses): 750 mg ÷ 2 = 375
mg/dose. Calculate mL: 400 mg/5 mL = 375 mg/x mL → 400x = 1875 → x =
4.69 ≈ 5 mL.
Question 4: A nurse is preparing to administer spironolactone 75 mg PO
daily. Available is spironolactone 25 mg tablets. How many tablets should
the nurse administer?
A) 1 tablet
B) 2 tablets
C) 3 tablets
D) 4 tablets
Correct ,,,,,answer,,,: C) 3 tablets
Rationale: 75 mg ÷ 25 mg/tablet = 3 tablets.
, Question 5: A nurse is preparing to administer heparin 12,000 units
subcutaneously every 12 hr. Available is heparin 20,000 units/mL. How
many mL should the nurse administer per dose?
A) 0.4 mL
B) 0.6 mL
C) 0.8 mL
D) 1 mL
Correct ,,,,,answer,,,: B) 0.6 mL
Rationale: 12,000 units ÷ 20,000 units/mL = 0.6 mL.
Question 6: A nurse is preparing to administer furosemide 60 mg IV push.
Available is furosemide 10 mg/mL. How many mL should the nurse
administer?
A) 4 mL
B) 5 mL
C) 6 mL
D) 7 mL
Correct ,,,,,answer,,,: C) 6 mL
Rationale: 60 mg ÷ 10 mg/mL = 6 mL.
Question 7: A nurse is preparing to administer phenytoin 200 mg PO.
Available is phenytoin oral suspension 125 mg/5 mL. How many mL
should the nurse administer?
A) 6 mL
3.2 Questions and Answers
,Question 1: A nurse is preparing to administer levothyroxine 0.1 mg PO
daily. Available is levothyroxine 50 mcg tablets. How many tablets should
the nurse administer?
A) 1 tablet
B) 2 tablets
C) 0.5 tablet
D) 1.5 tablets
Correct ,,,,,answer,,,: B) 2 tablets
Rationale: First convert 0.1 mg to mcg: 0.1 mg × 1000 = 100 mcg. Then
calculate tablets: 100 mcg ÷ 50 mcg/tablet = 2 tablets.
Question 2: A nurse is preparing to administer digoxin 0.25 mg PO daily.
Available is digoxin elixir 0.05 mg/mL. How many mL should the nurse
administer per dose?
A) 2 mL
B) 3 mL
C) 4 mL
D) 5 mL
Correct ,,,,,answer,,,: D) 5 mL
Rationale: Calculate using ratio/proportion: 0.05 mg/1 mL = 0.25 mg/x mL
→ 0.05x = 0.25 → x = 5 mL.
,Question 3: A nurse is preparing to administer amoxicillin 30 mg/kg/day
PO divided in equal doses every 12 hr to a client who weighs 55 lb.
Available is amoxicillin oral suspension 400 mg/5 mL. How many mL
should the nurse administer per dose? (Round to the nearest whole
number.)
A) 3 mL
B) 4 mL
C) 5 mL
D) 6 mL
Correct ,,,,,answer,,,: C) 5 mL
Rationale: Convert weight to kg: 55 lb ÷ 2.2 = 25 kg. Daily dose: 30 mg/kg
× 25 kg = 750 mg/day. Per dose (every 12 hr = 2 doses): 750 mg ÷ 2 = 375
mg/dose. Calculate mL: 400 mg/5 mL = 375 mg/x mL → 400x = 1875 → x =
4.69 ≈ 5 mL.
Question 4: A nurse is preparing to administer spironolactone 75 mg PO
daily. Available is spironolactone 25 mg tablets. How many tablets should
the nurse administer?
A) 1 tablet
B) 2 tablets
C) 3 tablets
D) 4 tablets
Correct ,,,,,answer,,,: C) 3 tablets
Rationale: 75 mg ÷ 25 mg/tablet = 3 tablets.
, Question 5: A nurse is preparing to administer heparin 12,000 units
subcutaneously every 12 hr. Available is heparin 20,000 units/mL. How
many mL should the nurse administer per dose?
A) 0.4 mL
B) 0.6 mL
C) 0.8 mL
D) 1 mL
Correct ,,,,,answer,,,: B) 0.6 mL
Rationale: 12,000 units ÷ 20,000 units/mL = 0.6 mL.
Question 6: A nurse is preparing to administer furosemide 60 mg IV push.
Available is furosemide 10 mg/mL. How many mL should the nurse
administer?
A) 4 mL
B) 5 mL
C) 6 mL
D) 7 mL
Correct ,,,,,answer,,,: C) 6 mL
Rationale: 60 mg ÷ 10 mg/mL = 6 mL.
Question 7: A nurse is preparing to administer phenytoin 200 mg PO.
Available is phenytoin oral suspension 125 mg/5 mL. How many mL
should the nurse administer?
A) 6 mL
