BSN 215 HESI RN SPECIALTY DOSAGE CALCULATION EXAM 2026/2027 | Nightingale College | Complete Study Guide | Practice Questions, Verified Answers & Detailed Rationales

BSN 215 HESI RN SPECIALTY DOSAGE
CALCULATION EXAM 2026/2027 |
Nightingale College | Complete Study Guide
| Practice Questions, Verified Answers &
Detailed Rationales
BSN 215 HESI RN SPECIALTY DOSAGE CALCULATION EXAM 2026/2027

Nightingale College | Complete Study Guide



DOCUMENT OVERVIEW

• Comprehensive Practice Resource: 200 verified dosage calculation questions
with detailed rationales designed to strengthen clinical calculation skills and boost
HESI exam confidence for RN licensure candidates.

• Active Learning Strategy: Study each question, attempt to solve independently,
then review the detailed rationale to understand the calculation method and
concept application in real-world nursing scenarios.




SECTION 1: BASIC UNIT CONVERSIONS AND METRIC SYSTEM



Question 1: Convert 1.5 grams to milligrams.

A) 150 mg

B) 1,500 mg

C) 0.0015 mg

D) 15 mg

E) 15,000 mg

CORRECT ANSWER: B) 1,500 mg

,RATIONALE: To convert grams to milligrams, multiply by 1,000 (1 gram = 1,000 mg).
Therefore, 1.5 grams × 1,000 = 1,500 mg. This fundamental conversion is essential
for all dosage calculations.



Question 2: How many milliliters are in 2 liters?

A) 20 mL

B) 200 mL

C) 2,000 mL

D) 0.2 mL

E) 20,000 mL

CORRECT ANSWER: C) 2,000 mL

RATIONALE: The conversion factor is 1 liter = 1,000 mL. Therefore, 2 liters × 1,000 =
2,000 mL. Understanding metric volume conversions is crucial for IV therapy and
medication administration.



Question 3: Convert 500 micrograms to milligrams.

A) 0.005 mg

B) 0.05 mg

C) 0.5 mg

D) 5 mg

E) 50 mg

CORRECT ANSWER: C) 0.5 mg

RATIONALE: To convert micrograms (mcg) to milligrams (mg), divide by 1,000 (1 mg
= 1,000 mcg). Therefore, 500 mcg ÷ 1,000 = 0.5 mg. This is critical for medications
dosed in micrograms like digoxin and fentanyl.

,Question 4: Express 0.25 grams in milligrams.

A) 2.5 mg

B) 25 mg

C) 250 mg

D) 2,500 mg

E) 0.0025 mg

CORRECT ANSWER: C) 250 mg

RATIONALE: Multiply grams by 1,000 to convert to milligrams: 0.25 × 1,000 = 250
mg. This conversion frequency is essential for antibiotic dosing and common oral
medications.



Question 5: Convert 1 kilogram to grams.

A) 0.001 g

B) 0.1 g

C) 100 g

D) 1,000 g

E) 10,000 g

CORRECT ANSWER: D) 1,000 g

RATIONALE: 1 kilogram = 1,000 grams. This conversion is fundamental for pediatric
weight-based dosing calculations where weights are often provided in kilograms.



Question 6: How many micrograms are in 2 milligrams?

A) 0.002 mcg

B) 0.02 mcg

C) 200 mcg

, D) 2,000 mcg

E) 20,000 mcg

CORRECT ANSWER: D) 2,000 mcg

RATIONALE: Multiply milligrams by 1,000 to convert to micrograms (1 mg = 1,000
mcg). Therefore, 2 mg × 1,000 = 2,000 mcg. This conversion is important for potent
medications administered in small doses.



Question 7: Convert 3.5 kilograms to grams.

A) 0.35 g

B) 3.5 g

C) 35 g

D) 350 g

E) 3,500 g

CORRECT ANSWER: E) 3,500 g

RATIONALE: Multiply kilograms by 1,000: 3.5 kg × 1,000 = 3,500 g. This conversion
is particularly useful in neonatal and pediatric nursing when calculating weight-
based medication doses.



Question 8: How many liters are in 250 milliliters?

A) 0.025 L

B) 0.25 L

C) 2.5 L

D) 25 L

E) 250 L

CORRECT ANSWER: B) 0.25 L