BSN 215 HESI RN Specialty Dosage Calculation
Exam Practice Questions & Answers | 130 High-
Yield Questions with Verified Answers &
Detailed Rationales | Latest 2024–2025 Edition |
Nightingale College | PDF Download
KEY DOSAGE CALCULATION FORMULAS
Oral Medications:
Desired Dose
Tablets = × Quantity
Available Dose
IV Flow Rate:
Total mL
mL/hr =
Hours
IV Drip Rate:
mL/hr × Drip Factor
gtt/min =
60
Weight-Based Dose:
Dose = Weight (kg) × Dose/kg
IV Push:
, Desired mg
mL =
Available mg/mL
Reconstitution:
Desired mg
mL =
Concentration (mg/mL)
Titration (µg/kg/min → mL/hr):
Dose (µg/kg/min) × Weight (kg) × 60
mL/hr =
Concentration (µg/mL)
Insulin:
Desired Units
mL =
Concentration (Units/mL)
Questions 1–33: Metric Conversions & Oral Medications
1. A patient is prescribed acetaminophen 1000 mg. The
medication is available as 500 mg/tablet. How many
tablets should the nurse administer?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Correct answer: B
Rationale: Use formula: Desired ÷ Available × Quantity = 1000 mg ÷ 500 mg × 1 tablet = 2
tablets.
,2. Convert 2.5 grams to milligrams.
A. 25 mg
B. 250 mg
C. 2500 mg
D. 25,000 mg
Correct answer: C
Rationale: 1 gram = 1000 mg; therefore 2.5 g × 1000 = 2500 mg.
3. A patient needs amoxicillin 0.5 g orally. The
medication is available as 250 mg/tablet. How many
tablets should be given?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Correct answer: B
Rationale: Convert 0.5 g to mg: 0.5 × 1000 = 500 mg. Then: 500 mg ÷ 250 mg × 1 tablet = 2
tablets.
4. Convert 750 milligrams to grams.
A. 0.075 g
B. 0.75 g
C. 7.5 g
D. 75 g
Correct answer: B
Rationale: 1000 mg = 1 g; therefore 750 mg ÷ 1000 = 0.75 g.
, 5. A prescription reads levothyroxine 0.1 mg orally
daily. The medication is available as 50 µg/tablet. How
many tablets should be administered?
A. 0.5 tablet
B. 1 tablet
C. 2 tablets
D. 3 tablets
Correct answer: C
Rationale: Convert 0.1 mg to µg: 0.1 × 1000 = 100 µg. Then: 100 µg ÷ 50 µg × 1 tablet = 2
tablets.
6. Convert 30 milliliters to ounces.
A. 0.5 oz
B. 1 oz
C. 2 oz
D. 3 oz
Correct answer: B
Rationale: 1 oz = 30 mL; therefore 30 mL ÷ 30 = 1 oz.
7. A patient is prescribed warfarin 7.5 mg orally. The
medication is available as 2.5 mg/tablet. How many
tablets should be given?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Exam Practice Questions & Answers | 130 High-
Yield Questions with Verified Answers &
Detailed Rationales | Latest 2024–2025 Edition |
Nightingale College | PDF Download
KEY DOSAGE CALCULATION FORMULAS
Oral Medications:
Desired Dose
Tablets = × Quantity
Available Dose
IV Flow Rate:
Total mL
mL/hr =
Hours
IV Drip Rate:
mL/hr × Drip Factor
gtt/min =
60
Weight-Based Dose:
Dose = Weight (kg) × Dose/kg
IV Push:
, Desired mg
mL =
Available mg/mL
Reconstitution:
Desired mg
mL =
Concentration (mg/mL)
Titration (µg/kg/min → mL/hr):
Dose (µg/kg/min) × Weight (kg) × 60
mL/hr =
Concentration (µg/mL)
Insulin:
Desired Units
mL =
Concentration (Units/mL)
Questions 1–33: Metric Conversions & Oral Medications
1. A patient is prescribed acetaminophen 1000 mg. The
medication is available as 500 mg/tablet. How many
tablets should the nurse administer?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Correct answer: B
Rationale: Use formula: Desired ÷ Available × Quantity = 1000 mg ÷ 500 mg × 1 tablet = 2
tablets.
,2. Convert 2.5 grams to milligrams.
A. 25 mg
B. 250 mg
C. 2500 mg
D. 25,000 mg
Correct answer: C
Rationale: 1 gram = 1000 mg; therefore 2.5 g × 1000 = 2500 mg.
3. A patient needs amoxicillin 0.5 g orally. The
medication is available as 250 mg/tablet. How many
tablets should be given?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Correct answer: B
Rationale: Convert 0.5 g to mg: 0.5 × 1000 = 500 mg. Then: 500 mg ÷ 250 mg × 1 tablet = 2
tablets.
4. Convert 750 milligrams to grams.
A. 0.075 g
B. 0.75 g
C. 7.5 g
D. 75 g
Correct answer: B
Rationale: 1000 mg = 1 g; therefore 750 mg ÷ 1000 = 0.75 g.
, 5. A prescription reads levothyroxine 0.1 mg orally
daily. The medication is available as 50 µg/tablet. How
many tablets should be administered?
A. 0.5 tablet
B. 1 tablet
C. 2 tablets
D. 3 tablets
Correct answer: C
Rationale: Convert 0.1 mg to µg: 0.1 × 1000 = 100 µg. Then: 100 µg ÷ 50 µg × 1 tablet = 2
tablets.
6. Convert 30 milliliters to ounces.
A. 0.5 oz
B. 1 oz
C. 2 oz
D. 3 oz
Correct answer: B
Rationale: 1 oz = 30 mL; therefore 30 mL ÷ 30 = 1 oz.
7. A patient is prescribed warfarin 7.5 mg orally. The
medication is available as 2.5 mg/tablet. How many
tablets should be given?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
