NR 326, CHAMBERLAIN,PEDIATRIC DOSAGE CALCULATION
,MEDICATION CALCULATION, WEIGHT BASED, SAFE RANGE, IV FLOW
RATE, ML/HR, GTT/MIN, RECONSTITUTION, HEPARIN, INSULIN, 2025,
ATI | STE- BY -STEP SOLUTIONS | 100% PASSED
A patient has an order for Chloromycetin 500 mg every 6 hours. The drug is available as 250
mg capsules. What should the nurse administer?
A. 1 capsule
B. 2 capsules
C. 3 capsules
D. 4 capsules
Answer: B. 2 capsules
Rationale: The ordered dose is 500 mg and each capsule contains 250 mg. Dividing 500 by
250 gives 2 capsules. Always match ordered dose with available strength.
A nurse is to administer 150 mg of a drug intramuscularly. The vial is labeled 100 mg/mL.
How much should the nurse give?
A. 1 mL
B. 1.25 mL
C. 1.5 mL
D. 2 mL
Answer: C. 1.5 mL
Rationale: Use the formula: Dose ordered ÷ Dose on hand × Volume. (150 ÷ 100) × 1 mL =
1.5 mL.
A nurse is to administer 30 mg of furosemide. The vial contains 40 mg/mL. What is the
correct dose?
A. 0.5 mL
B. 0.75 mL
C. 1 mL
D. 1.25 mL
Answer: B. 0.75 mL
Rationale: (30 ÷ 40) × 1 mL = 0.75 mL. Always calculate based on concentration.
A client is prescribed 600 mg of an oral liquid medication. The label reads 250 mg/mL. How
many milliliters should be given?
,A. 2 mL
B. 2.4 mL
C. 3 mL
D. 4 mL
Answer: B. 2.4 mL
Rationale: (600 ÷ 250) × 1 mL = 2.4 mL.
A child is to receive 500 mg of an antibiotic suspension labeled 250 mg/5 mL. How much
should be administered?
A. 5 mL
B. 7.5 mL
C. 10 mL
D. 12 mL
Answer: C. 10 mL
Rationale: 250 mg is in 5 mL, so 500 mg requires double the volume: 10 mL.
An order is written for 250 mg of an antibiotic suspension. The label reads 500 mg/5 mL.
What volume should the nurse administer?
A. 2 mL
B. 2.5 mL
C. 3 mL
D. 5 mL
Answer: B. 2.5 mL
Rationale: 250 mg is half of 500 mg, so give half of 5 mL, which is 2.5 mL.
A client is prescribed ascorbic acid 1 g daily. Tablets available are 250 mg. How many tablets
should be given?
A. 2 tablets
B. 3 tablets
C. 4 tablets
D. 5 tablets
Answer: C. 4 tablets
Rationale: 1 g = 1000 mg. 1000 ÷ 250 = 4 tablets.
, An order for amoxicillin 250 mg is written. The label reads 125 mg/5 mL. How much should
the nurse administer?
A. 5 mL
B. 7.5 mL
C. 10 mL
D. 12 mL
Answer: C. 10 mL
Rationale: 125 mg per 5 mL, so 250 mg requires 10 mL.
A nurse is to administer 175 mg IM. The vial is labeled 100 mg/mL. What volume is
required?
A. 1.5 mL
B. 1.7 mL
C. 1.75 mL
D. 2 mL
Answer: B. 1.7 mL
Rationale: (175 ÷ 100) = 1.75 mL, rounded to the nearest tenth = 1.7 mL for IM safety.
A client requires 80 mg of Solu-Medrol IV. The vial contains 120 mg in 2 mL. How much
should be drawn?
A. 1 mL
B. 1.2 mL
C. 1.3 mL
D. 1.5 mL
Answer: C. 1.3 mL
Rationale: 120 mg in 2 mL = 60 mg/mL. (80 ÷ 60) = 1.33 mL, rounded to 1.3 mL.
An order for ascorbic acid 0.5 g is written. Tablets available are 250 mg. How many tablets
should be given?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Answer: B. 2 tablets
Rationale: 0.5 g = 500 mg. 500 ÷ 250 = 2 tablets.
,MEDICATION CALCULATION, WEIGHT BASED, SAFE RANGE, IV FLOW
RATE, ML/HR, GTT/MIN, RECONSTITUTION, HEPARIN, INSULIN, 2025,
ATI | STE- BY -STEP SOLUTIONS | 100% PASSED
A patient has an order for Chloromycetin 500 mg every 6 hours. The drug is available as 250
mg capsules. What should the nurse administer?
A. 1 capsule
B. 2 capsules
C. 3 capsules
D. 4 capsules
Answer: B. 2 capsules
Rationale: The ordered dose is 500 mg and each capsule contains 250 mg. Dividing 500 by
250 gives 2 capsules. Always match ordered dose with available strength.
A nurse is to administer 150 mg of a drug intramuscularly. The vial is labeled 100 mg/mL.
How much should the nurse give?
A. 1 mL
B. 1.25 mL
C. 1.5 mL
D. 2 mL
Answer: C. 1.5 mL
Rationale: Use the formula: Dose ordered ÷ Dose on hand × Volume. (150 ÷ 100) × 1 mL =
1.5 mL.
A nurse is to administer 30 mg of furosemide. The vial contains 40 mg/mL. What is the
correct dose?
A. 0.5 mL
B. 0.75 mL
C. 1 mL
D. 1.25 mL
Answer: B. 0.75 mL
Rationale: (30 ÷ 40) × 1 mL = 0.75 mL. Always calculate based on concentration.
A client is prescribed 600 mg of an oral liquid medication. The label reads 250 mg/mL. How
many milliliters should be given?
,A. 2 mL
B. 2.4 mL
C. 3 mL
D. 4 mL
Answer: B. 2.4 mL
Rationale: (600 ÷ 250) × 1 mL = 2.4 mL.
A child is to receive 500 mg of an antibiotic suspension labeled 250 mg/5 mL. How much
should be administered?
A. 5 mL
B. 7.5 mL
C. 10 mL
D. 12 mL
Answer: C. 10 mL
Rationale: 250 mg is in 5 mL, so 500 mg requires double the volume: 10 mL.
An order is written for 250 mg of an antibiotic suspension. The label reads 500 mg/5 mL.
What volume should the nurse administer?
A. 2 mL
B. 2.5 mL
C. 3 mL
D. 5 mL
Answer: B. 2.5 mL
Rationale: 250 mg is half of 500 mg, so give half of 5 mL, which is 2.5 mL.
A client is prescribed ascorbic acid 1 g daily. Tablets available are 250 mg. How many tablets
should be given?
A. 2 tablets
B. 3 tablets
C. 4 tablets
D. 5 tablets
Answer: C. 4 tablets
Rationale: 1 g = 1000 mg. 1000 ÷ 250 = 4 tablets.
, An order for amoxicillin 250 mg is written. The label reads 125 mg/5 mL. How much should
the nurse administer?
A. 5 mL
B. 7.5 mL
C. 10 mL
D. 12 mL
Answer: C. 10 mL
Rationale: 125 mg per 5 mL, so 250 mg requires 10 mL.
A nurse is to administer 175 mg IM. The vial is labeled 100 mg/mL. What volume is
required?
A. 1.5 mL
B. 1.7 mL
C. 1.75 mL
D. 2 mL
Answer: B. 1.7 mL
Rationale: (175 ÷ 100) = 1.75 mL, rounded to the nearest tenth = 1.7 mL for IM safety.
A client requires 80 mg of Solu-Medrol IV. The vial contains 120 mg in 2 mL. How much
should be drawn?
A. 1 mL
B. 1.2 mL
C. 1.3 mL
D. 1.5 mL
Answer: C. 1.3 mL
Rationale: 120 mg in 2 mL = 60 mg/mL. (80 ÷ 60) = 1.33 mL, rounded to 1.3 mL.
An order for ascorbic acid 0.5 g is written. Tablets available are 250 mg. How many tablets
should be given?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Answer: B. 2 tablets
Rationale: 0.5 g = 500 mg. 500 ÷ 250 = 2 tablets.
