BSN HESI 215 Dosage Calculations ACTUAL
EXAM 2026/2027: 100% Verified Questions &
Correct Answers
Question 1:
Order: Phenytoin 0.2 g PO BID.
Available: Phenytoin 125 mg/5 mL suspension.
How many mL will the nurse administer per dose?
A. 1.25 mL
B. 8 mL
C. 12.5 mL
D. 0.8 mL
Correct Answer: B
Rationale: Convert 0.2 g to mg → 0.2 g × 1 000 mg/g = 200 mg. Use ratio 125 mg : 5 mL = 200 mg
: x mL → x = (200 × 5) ⁄ 125 = 8 mL.
Question 2:
,Order: Levothyroxine 0.088 mg PO daily.
Available: Levothyroxine 44 µg tablets.
How many tablets will the nurse give?
A. 0.5 tablet
B. 2 tablets
C. 1.5 tablets
D. 4 tablets
Correct Answer: B
Rationale: Convert 0.088 mg to µg → 0.088 mg × 1 000 µg/mg = 88 µg. 88 µg ÷ 44 µg/tablet = 2
tablets.
Question 3:
Order: Aminophylline 0.5 g IV in 250 mL D5W to infuse over 6 h.
What is the infusion rate in mL/h?
A. 41.7 mL/h
B. 50 mL/h
C. 42 mL/h
, D. 60 mL/h
Correct Answer: C
Rationale: 250 mL ÷ 6 h = 41.666… mL/h; round to nearest whole number → 42 mL/h.
Question 4:
Order: Morphine sulfate 8 mg IV q4h PRN.
Available: Morphine 10 mg/mL.
How many mL will the nurse draw up?
A. 1.25 mL
B. 0.8 mL
C. 0.8 mL
D. 1 mL
Correct Answer: C
Rationale: 8 mg ÷ 10 mg/mL = 0.8 mL.
Question 5:
Order: Cefazolin 350 mg IM q8h.
Available: Cefazolin 500 mg vial; reconstitute with 2 mL sterile water to yield 225 mg/mL.
EXAM 2026/2027: 100% Verified Questions &
Correct Answers
Question 1:
Order: Phenytoin 0.2 g PO BID.
Available: Phenytoin 125 mg/5 mL suspension.
How many mL will the nurse administer per dose?
A. 1.25 mL
B. 8 mL
C. 12.5 mL
D. 0.8 mL
Correct Answer: B
Rationale: Convert 0.2 g to mg → 0.2 g × 1 000 mg/g = 200 mg. Use ratio 125 mg : 5 mL = 200 mg
: x mL → x = (200 × 5) ⁄ 125 = 8 mL.
Question 2:
,Order: Levothyroxine 0.088 mg PO daily.
Available: Levothyroxine 44 µg tablets.
How many tablets will the nurse give?
A. 0.5 tablet
B. 2 tablets
C. 1.5 tablets
D. 4 tablets
Correct Answer: B
Rationale: Convert 0.088 mg to µg → 0.088 mg × 1 000 µg/mg = 88 µg. 88 µg ÷ 44 µg/tablet = 2
tablets.
Question 3:
Order: Aminophylline 0.5 g IV in 250 mL D5W to infuse over 6 h.
What is the infusion rate in mL/h?
A. 41.7 mL/h
B. 50 mL/h
C. 42 mL/h
, D. 60 mL/h
Correct Answer: C
Rationale: 250 mL ÷ 6 h = 41.666… mL/h; round to nearest whole number → 42 mL/h.
Question 4:
Order: Morphine sulfate 8 mg IV q4h PRN.
Available: Morphine 10 mg/mL.
How many mL will the nurse draw up?
A. 1.25 mL
B. 0.8 mL
C. 0.8 mL
D. 1 mL
Correct Answer: C
Rationale: 8 mg ÷ 10 mg/mL = 0.8 mL.
Question 5:
Order: Cefazolin 350 mg IM q8h.
Available: Cefazolin 500 mg vial; reconstitute with 2 mL sterile water to yield 225 mg/mL.
