ATI Dosage Calculation RN Fundamentals
Proctored 2026 Actual exam Assessment 3.2 –
Questions and Answers
Q001:
Problem Type: Metric Conversion / Liquid Oral
Clinical Scenario: A patient is prescribed 500 mg of amoxicillin PO q8h. The pharmacy
supplies amoxicillin suspension 250 mg/5 mL.
Given: Order: 500 mg; Available: 250 mg/5 mL; No patient weight needed.
Question: How many mL will the nurse administer per dose?
(Correct Numeric Answer: 10 mL)
Work & Rationale:
● Setup: (Desired / Have) × Volume = (500 mg / 250 mg) × 5 mL
● Calculation: 2 × 5 mL = 10 mL
● Safety Check: Dose is within safe adult range; measure with oral syringe.
Q002:
Problem Type: IM Injection
Clinical Scenario: A patient is ordered to receive diphenhydramine 25 mg IM STAT for
allergic reaction. Available is diphenhydramine 50 mg/mL.
Given: Order: 25 mg; Available: 50 mg/mL.
Question: How many mL will the nurse give? (Round to nearest tenth.)
,(Correct Numeric Answer: 0.5 mL)
Work & Rationale:
● Setup: 25 mg ÷ 50 mg/mL = 0.5 mL
● Calculation: 25 ÷ 50 = 0.5
● Safety Check: Volume safe for IM injection; use 1 mL syringe.
Q003:
Problem Type: Weight-Based PO
Clinical Scenario: A child weighs 15 kg. The order reads acetaminophen 10 mg/kg PO
q6h prn. The suspension is 160 mg/5 mL.
Given: Dose: 10 mg/kg; Weight: 15 kg; Available: 160 mg/5 mL.
Question: How many mL per dose? (Round to nearest tenth.)
(Correct Numeric Answer: 4.7 mL)
Work & Rationale:
● Setup: 10 mg/kg × 15 kg = 150 mg; (150 mg / 160 mg) × 5 mL
● Calculation: 0.9375 × 5 = 4.6875 → 4.7 mL
● Safety Check: Dose under max 75 mg/kg/day; 4 doses allowed.
Q004:
Problem Type: IV Drip Rate (gtt/min)
Clinical Scenario: The provider orders 1,000 mL NS to infuse over 8 hours. The
administration set delivers 15 gtt/mL.
Given: Volume: 1,000 mL; Time: 8 h; Drop factor: 15 gtt/mL.
Question: Calculate gtt/min. (Round to nearest whole number.)
, (Correct Numeric Answer: 31 gtt/min)
Work & Rationale:
● Setup: (1,000 mL × 15 gtt/mL) ÷ (8 × 60 min)
● Calculation: 15,000 ÷ 480 = 31.25 → 31 gtt/min
● Safety Check: Rate reasonable; monitor for fluid overload.
Q005:
Problem Type: SubQ Injection
Clinical Scenario: Enoxaparin 30 mg SubQ q12h is ordered. Available is 40 mg/0.4 mL.
Given: Order: 30 mg; Available: 40 mg/0.4 mL.
Question: How many mL will the nurse administer? (Round to nearest hundredth.)
(Correct Numeric Answer: 0.3 mL)
Work & Rationale:
● Setup: (30 mg / 40 mg) × 0.4 mL = 0.3 mL
● Calculation: 0.75 × 0.4 = 0.3
● Safety Check: Volume safe for SubQ; alternate sites.
Q006:
Problem Type: Reconstitution
Clinical Scenario: Penicillin G 600,000 units IM is ordered. The vial contains 1,000,000
units; reconstitute with 4.8 mL sterile water to yield 200,000 units/mL.
Given: Order: 600,000 units; Available after reconstitution: 200,000 units/mL.
Question: How many mL to give?
Proctored 2026 Actual exam Assessment 3.2 –
Questions and Answers
Q001:
Problem Type: Metric Conversion / Liquid Oral
Clinical Scenario: A patient is prescribed 500 mg of amoxicillin PO q8h. The pharmacy
supplies amoxicillin suspension 250 mg/5 mL.
Given: Order: 500 mg; Available: 250 mg/5 mL; No patient weight needed.
Question: How many mL will the nurse administer per dose?
(Correct Numeric Answer: 10 mL)
Work & Rationale:
● Setup: (Desired / Have) × Volume = (500 mg / 250 mg) × 5 mL
● Calculation: 2 × 5 mL = 10 mL
● Safety Check: Dose is within safe adult range; measure with oral syringe.
Q002:
Problem Type: IM Injection
Clinical Scenario: A patient is ordered to receive diphenhydramine 25 mg IM STAT for
allergic reaction. Available is diphenhydramine 50 mg/mL.
Given: Order: 25 mg; Available: 50 mg/mL.
Question: How many mL will the nurse give? (Round to nearest tenth.)
,(Correct Numeric Answer: 0.5 mL)
Work & Rationale:
● Setup: 25 mg ÷ 50 mg/mL = 0.5 mL
● Calculation: 25 ÷ 50 = 0.5
● Safety Check: Volume safe for IM injection; use 1 mL syringe.
Q003:
Problem Type: Weight-Based PO
Clinical Scenario: A child weighs 15 kg. The order reads acetaminophen 10 mg/kg PO
q6h prn. The suspension is 160 mg/5 mL.
Given: Dose: 10 mg/kg; Weight: 15 kg; Available: 160 mg/5 mL.
Question: How many mL per dose? (Round to nearest tenth.)
(Correct Numeric Answer: 4.7 mL)
Work & Rationale:
● Setup: 10 mg/kg × 15 kg = 150 mg; (150 mg / 160 mg) × 5 mL
● Calculation: 0.9375 × 5 = 4.6875 → 4.7 mL
● Safety Check: Dose under max 75 mg/kg/day; 4 doses allowed.
Q004:
Problem Type: IV Drip Rate (gtt/min)
Clinical Scenario: The provider orders 1,000 mL NS to infuse over 8 hours. The
administration set delivers 15 gtt/mL.
Given: Volume: 1,000 mL; Time: 8 h; Drop factor: 15 gtt/mL.
Question: Calculate gtt/min. (Round to nearest whole number.)
, (Correct Numeric Answer: 31 gtt/min)
Work & Rationale:
● Setup: (1,000 mL × 15 gtt/mL) ÷ (8 × 60 min)
● Calculation: 15,000 ÷ 480 = 31.25 → 31 gtt/min
● Safety Check: Rate reasonable; monitor for fluid overload.
Q005:
Problem Type: SubQ Injection
Clinical Scenario: Enoxaparin 30 mg SubQ q12h is ordered. Available is 40 mg/0.4 mL.
Given: Order: 30 mg; Available: 40 mg/0.4 mL.
Question: How many mL will the nurse administer? (Round to nearest hundredth.)
(Correct Numeric Answer: 0.3 mL)
Work & Rationale:
● Setup: (30 mg / 40 mg) × 0.4 mL = 0.3 mL
● Calculation: 0.75 × 0.4 = 0.3
● Safety Check: Volume safe for SubQ; alternate sites.
Q006:
Problem Type: Reconstitution
Clinical Scenario: Penicillin G 600,000 units IM is ordered. The vial contains 1,000,000
units; reconstitute with 4.8 mL sterile water to yield 200,000 units/mL.
Given: Order: 600,000 units; Available after reconstitution: 200,000 units/mL.
Question: How many mL to give?
