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Dosage Calculations and IV Therapy Exam
Questions And Answers With Verified
Rationales | 2026/27 Qs & Ans | Digital Pdf
Download
1. A provider orders 500 mg of a medication. The available tablet strength is 250
mg/tablet. How many tablets should the nurse administer?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Answer: B. 2 tablets
Rationale: 500 mg ÷ 250 mg = 2 tablets.
2. A medication order reads 1 g. How many milligrams is this?
A. 10 mg
B. 100 mg
C. 1,000 mg
D. 10,000 mg
Answer: C. 1,000 mg
Rationale: 1 gram equals 1,000 milligrams.
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3. A nurse must infuse 1,000 mL over 8 hours. What is the IV flow rate in mL/hr?
A. 100 mL/hr
B. 125 mL/hr
C. 150 mL/hr
D. 175 mL/hr
Answer: B. 125 mL/hr
Rationale: 1,000 mL ÷ 8 hr = 125 mL/hr.
4. A patient is prescribed heparin 5,000 units subcutaneously. The vial contains
10,000 units/mL. How many mL should the nurse administer?
A. 0.25 mL
B. 0.5 mL
C. 1 mL
D. 2 mL
Answer: B. 0.5 mL
Rationale: 5,000 ÷ 10,000 = 0.5 mL.
5. Which IV solution is classified as isotonic?
A. 0.45% NS
B. D5W
C. 0.9% NS
D. 3% NS
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Answer: C. 0.9% NS
Rationale: Normal saline (0.9% NS) is isotonic and commonly used for
fluid replacement.
6. A medication order reads 750 mg. The medication is available as 250 mg/5 mL.
How many mL should the nurse administer?
A. 5 mL
B. 10 mL
C. 15 mL
D. 20 mL
Answer: C. 15 mL
Rationale: 750 mg ÷ 250 mg = 3; 3 × 5 mL = 15 mL.
7. The nurse is administering IV potassium chloride. Which action is correct?
A. Push rapidly IV
B. Administer undiluted
C. Infuse slowly using a pump
D. Give intramuscularly
Answer: C. Infuse slowly using a pump
Rationale: IV potassium must be diluted and infused slowly to prevent
cardiac complications.
3
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8. A provider orders 2 L of IV fluid over 24 hours. What is the hourly infusion
rate?
A. 42 mL/hr
B. 63 mL/hr
C. 83 mL/hr
D. 125 mL/hr
Answer: C. 83 mL/hr
Rationale: 2,000 mL ÷ 24 hr = 83.3 mL/hr.
9. Which electrolyte imbalance may result from excessive IV diuretic therapy?
A. Hyperkalemia
B. Hypokalemia
C. Hypernatremia
D. Hypercalcemia
Answer: B. Hypokalemia
Rationale: Diuretics increase potassium loss through urine.
10. A child weighs 22 lb. What is the weight in kilograms?
A. 5 kg
B. 8 kg
C. 10 kg
D. 12 kg
4
Dosage Calculations and IV Therapy Exam
Questions And Answers With Verified
Rationales | 2026/27 Qs & Ans | Digital Pdf
Download
1. A provider orders 500 mg of a medication. The available tablet strength is 250
mg/tablet. How many tablets should the nurse administer?
A. 1 tablet
B. 2 tablets
C. 3 tablets
D. 4 tablets
Answer: B. 2 tablets
Rationale: 500 mg ÷ 250 mg = 2 tablets.
2. A medication order reads 1 g. How many milligrams is this?
A. 10 mg
B. 100 mg
C. 1,000 mg
D. 10,000 mg
Answer: C. 1,000 mg
Rationale: 1 gram equals 1,000 milligrams.
1
, © 2026 Copy Right Reserved.
3. A nurse must infuse 1,000 mL over 8 hours. What is the IV flow rate in mL/hr?
A. 100 mL/hr
B. 125 mL/hr
C. 150 mL/hr
D. 175 mL/hr
Answer: B. 125 mL/hr
Rationale: 1,000 mL ÷ 8 hr = 125 mL/hr.
4. A patient is prescribed heparin 5,000 units subcutaneously. The vial contains
10,000 units/mL. How many mL should the nurse administer?
A. 0.25 mL
B. 0.5 mL
C. 1 mL
D. 2 mL
Answer: B. 0.5 mL
Rationale: 5,000 ÷ 10,000 = 0.5 mL.
5. Which IV solution is classified as isotonic?
A. 0.45% NS
B. D5W
C. 0.9% NS
D. 3% NS
2
, © 2026 Copy Right Reserved.
Answer: C. 0.9% NS
Rationale: Normal saline (0.9% NS) is isotonic and commonly used for
fluid replacement.
6. A medication order reads 750 mg. The medication is available as 250 mg/5 mL.
How many mL should the nurse administer?
A. 5 mL
B. 10 mL
C. 15 mL
D. 20 mL
Answer: C. 15 mL
Rationale: 750 mg ÷ 250 mg = 3; 3 × 5 mL = 15 mL.
7. The nurse is administering IV potassium chloride. Which action is correct?
A. Push rapidly IV
B. Administer undiluted
C. Infuse slowly using a pump
D. Give intramuscularly
Answer: C. Infuse slowly using a pump
Rationale: IV potassium must be diluted and infused slowly to prevent
cardiac complications.
3
, © 2026 Copy Right Reserved.
8. A provider orders 2 L of IV fluid over 24 hours. What is the hourly infusion
rate?
A. 42 mL/hr
B. 63 mL/hr
C. 83 mL/hr
D. 125 mL/hr
Answer: C. 83 mL/hr
Rationale: 2,000 mL ÷ 24 hr = 83.3 mL/hr.
9. Which electrolyte imbalance may result from excessive IV diuretic therapy?
A. Hyperkalemia
B. Hypokalemia
C. Hypernatremia
D. Hypercalcemia
Answer: B. Hypokalemia
Rationale: Diuretics increase potassium loss through urine.
10. A child weighs 22 lb. What is the weight in kilograms?
A. 5 kg
B. 8 kg
C. 10 kg
D. 12 kg
4
