BSN HESI 215 Dosage Calculation Exam V2 Practice
Test Actual 2025/2026 with Detailed Rationales | 100%
Verified | Pass Guaranteed – A+ Graded
SECTION 1: Basic Conversions & Metric System — 8 Questions
Q1. The physician orders amoxicillin 500 mg PO q8h. The medication is available as
250 mg/5 mL. How many mL will the nurse administer per dose?
A. 5 mL
B. 10 mL
C. 15 mL
D. 20 mL
Correct Answer: B
Rationale: 500 mg ÷ 250 mg × 5 mL = 10 mL per dose.
Q2. A patient weighs 165 lbs. The physician orders a medication 0.5 mg/kg/day
divided into 3 doses. How many mg per dose will the nurse administer?
A. 12.5 mg
B. 25 mg
C. 37.5 mg
D. 50 mg
Correct Answer: A
,Rationale: 165 lbs ÷ 2.2 = 75 kg; 75 kg × 0.5 mg = 37.5 mg/day ÷ 3 doses = 12.5
mg/dose.
Q3. The physician orders 1000 mL of 0.9% NS to infuse over 8 hours. What is the
infusion rate in mL/hr?
A. 100 mL/hr
B. 125 mL/hr
C. 150 mL/hr
D. 200 mL/hr
Correct Answer: B
Rationale: 1000 mL ÷ 8 hours = 125 mL/hr.
Q4. The physician orders heparin 5,000 units subcutaneously. The medication is
available as 10,000 units/mL. How many mL will the nurse administer?
A. 0.5 mL
B. 1 mL
C. 1.5 mL
D. 2 mL
Correct Answer: A
Rationale: 5,000 ÷ 10,000 × 1 mL = 0.5 mL.
Q5. The physician orders 500 mL of D5W to infuse over 4 hours. The drop factor is
15 gtt/mL. What is the infusion rate in drops per minute?
, A. 15 gtt/min
B. 20 gtt/min
C. 25 gtt/min
D. 30 gtt/min
Correct Answer: D
Rationale: 500 mL ÷ 4 hours = 125 mL/hr; 125 ÷ 60 = 2.08 mL/min × 15 = 31.25
rounded to 31 gtt/min (closest 30 gtt/min).
Q6. The physician orders ceftriaxone 500 mg IM. The medication is available as 1 g
powder with instructions to reconstitute with 10 mL sterile water to yield a
concentration of 100 mg/mL. How many mL will the nurse administer?
A. 5 mL
B. 10 mL
C. 15 mL
D. 20 mL
Correct Answer: A
Rationale: 500 mg ÷ 100 mg/mL = 5 mL.
Q7. A pediatric patient weighs 22 kg. The physician orders a medication 15
mg/kg/day divided into 3 doses. How many mg per dose will the nurse administer?
A. 55 mg
B. 110 mg
Test Actual 2025/2026 with Detailed Rationales | 100%
Verified | Pass Guaranteed – A+ Graded
SECTION 1: Basic Conversions & Metric System — 8 Questions
Q1. The physician orders amoxicillin 500 mg PO q8h. The medication is available as
250 mg/5 mL. How many mL will the nurse administer per dose?
A. 5 mL
B. 10 mL
C. 15 mL
D. 20 mL
Correct Answer: B
Rationale: 500 mg ÷ 250 mg × 5 mL = 10 mL per dose.
Q2. A patient weighs 165 lbs. The physician orders a medication 0.5 mg/kg/day
divided into 3 doses. How many mg per dose will the nurse administer?
A. 12.5 mg
B. 25 mg
C. 37.5 mg
D. 50 mg
Correct Answer: A
,Rationale: 165 lbs ÷ 2.2 = 75 kg; 75 kg × 0.5 mg = 37.5 mg/day ÷ 3 doses = 12.5
mg/dose.
Q3. The physician orders 1000 mL of 0.9% NS to infuse over 8 hours. What is the
infusion rate in mL/hr?
A. 100 mL/hr
B. 125 mL/hr
C. 150 mL/hr
D. 200 mL/hr
Correct Answer: B
Rationale: 1000 mL ÷ 8 hours = 125 mL/hr.
Q4. The physician orders heparin 5,000 units subcutaneously. The medication is
available as 10,000 units/mL. How many mL will the nurse administer?
A. 0.5 mL
B. 1 mL
C. 1.5 mL
D. 2 mL
Correct Answer: A
Rationale: 5,000 ÷ 10,000 × 1 mL = 0.5 mL.
Q5. The physician orders 500 mL of D5W to infuse over 4 hours. The drop factor is
15 gtt/mL. What is the infusion rate in drops per minute?
, A. 15 gtt/min
B. 20 gtt/min
C. 25 gtt/min
D. 30 gtt/min
Correct Answer: D
Rationale: 500 mL ÷ 4 hours = 125 mL/hr; 125 ÷ 60 = 2.08 mL/min × 15 = 31.25
rounded to 31 gtt/min (closest 30 gtt/min).
Q6. The physician orders ceftriaxone 500 mg IM. The medication is available as 1 g
powder with instructions to reconstitute with 10 mL sterile water to yield a
concentration of 100 mg/mL. How many mL will the nurse administer?
A. 5 mL
B. 10 mL
C. 15 mL
D. 20 mL
Correct Answer: A
Rationale: 500 mg ÷ 100 mg/mL = 5 mL.
Q7. A pediatric patient weighs 22 kg. The physician orders a medication 15
mg/kg/day divided into 3 doses. How many mg per dose will the nurse administer?
A. 55 mg
B. 110 mg
