HESI RN
RN Hesi Med Surg Dosage Calculations Questions
Extract:
Question 1 of 5
The nurse plans to administer a bolus dose of IV Heparin based on the client's weight. The prescribed bolus dose is 100 units/kg. The client weighs 198 pounds. How many units of Heparin should the nurse administer? (Enter numeric value only.)
Correct Answer: 9000
Rationale: Weight: 198 pounds / 2.2 = 90 kg. Dose: 100 units/kg × 90 = 9000 units.
Question 2 of 5
A client with deep vein thrombosis (DVT) is receiving a continuous Infusion of Heparin Sodium 20,000 Units In 5% Dextrose Injection 500 mL at the rate of 25 mL/hour. How many units of heparin should the client receive in 12 hours? (Enter numeric value only.)
Correct Answer: 12000
Rationale: Concentration: 20,000 units / 500 mL = 40 units/mL. Hourly dose: 25 mL/hour × 40 = 1000 units/hour. In 12 hours: 1000 × 12 = 12000 units.
Question 3 of 5
The healthcare provider prescribes lamivudine oral solution 150 mg twice daily for a client who is HIV positive. The available bottle contains 240 mL of lamivudine labeled, '10 mg/mL.' How many mL should the nurse administer in a 24 hour period? (Enter numeric value only.)
Correct Answer: 30
Rationale: Dose per administration: 150 mg / (10 mg/mL) = 15 mL. Daily volume: 15 × 2 = 30 mL.
Question 4 of 5
A client with a renal calculi receives a prescription for an intravenous infusion of 0.9% Sodium chloride Injection, USP 1,000 mL to be infused over 2.5 hours. The nurse should program the infusion pump to deliver how many mL/hour? (Enter numeric value only. If rounding is required, round to the nearest whole number.)
Correct Answer: 400
Rationale: Infusion rate = 1000 mL / 2.5 hours = 400 mL/hour.
Question 5 of 5
A client with a gram-positive bacterial skin Infection is receiving daptomycin 500 mg IV every 24 hours. The pharmacy delivers a secondary Infusion of 0.9% Sodium Chloride with daptomycin 500 mg/100 ml to be infused in 30 minutes. How many mL/hour should the nurse program the infusion pump? (Enter the numerical value only.)
Correct Answer: 200
Rationale: Infusion rate = 100 mL / 0.5 hours = 200 mL/hour.