Question

The healthcare provider prescribes epoetin alfa 8,200 units SUBQ for a client with chronic kidney disease (CKD). The 2 mL multidose vial is labeled, "Each 1 mL of solution contains 10,000 Units of epoetin alfa." How many mL should the nurse administer? (Enter the numerical value only. If rounding is required, round to the nearest tenth).

Answer 1

Correct Answers:

0.8

Rationale :

🧪The prescribed dose is 8,200 units, and the vial contains 10,000 units/mL.

📏To find the volume: 8,200 ÷ 10,000 = 0.82, which rounds to 0.8 mL.

💉This precise calculation ensures the client receives the correct subcutaneous dose for treating anemia in CKD.

⚕️Accurate dosing helps maintain hematologic stability and avoid under- or overdosing.

📌Core Message

Use units ÷ concentration to calculate the correct volume to administer.

Answer 2

Correct Answers:

3

Rationale :

🧪The syringe contains 1,200,000 units in 2 mL.

📏To deliver 1,800,000 units, set up the ratio: 1,800,000 ÷ 1,200,000 = 1.5 × 2 mL = 3 mL.

💉Rounding is not needed since this yields a whole number.

⚕️This dose supports full therapeutic effect for bacterial infection.

📌Core Message

Use unit-to-unit ratio with the supplied volume to determine exact mL to administer.

Answer 3

Correct Answers:

5

Rationale :

⚖️Child weighs 44 lb = 20 kg.

🧪Dose: 10 mg/kg × 20 = 200 mg on Day 1.

📦Concentration is 200 mg per 5 mL, so 200 ÷ 200 = 5 mL.

💉Administering the full loading dose is essential to initiate therapy effectively.

📌Core Message

Convert weight to kg, multiply by dose/kg, then divide by concentration to find mL to give.

Answer 4

Correct Answers:

50

Rationale :

📏The bag contains 20,000 units in 500 mL → concentration = 40 units/mL.

🧪Original rate: 1,800 ÷ 40 = 45 mL/hr → increase by 5 = 50 mL/hr.

💉Rate adjustments based on lab results (e.g., PTT) help maintain therapeutic anticoagulation.

⚕️Correct infusion rates are critical to prevent thrombotic or bleeding complications.

📌Core Message

Calculate the initial mL/hr, then add any adjustment to find new infusion rate.

Answer 5

Correct Answers:

20

Rationale :

📦Insulin concentration is 50 units in 100 mL = 0.5 units/mL.

🧪Prescribed dose: 10 units/hr ÷ 0.5 = 20 mL/hr.

💉This rate ensures a steady dose for managing diabetic ketoacidosis.

⚕️Using the correct infusion rate avoids hypoglycemia or hyperglycemia.

📌Core Message

Use unit-to-mL conversion to determine the correct pump rate for insulin infusions.

Answer 6

Correct Answers:

0.1

Rationale :

🧪100 mcg = 0.1 mg.

📏Vial label = 1 mg/mL → 0.1 mg ÷ 1 mg/mL = 0.1 mL.

💉This small dose supports treatment of vitamin B12 deficiency in pernicious anemia.

⚕️Accurate calculation ensures effective replacement without waste.

📌Core Message

Convert mcg to mg, then divide by vial concentration to find volume for IM injection.

Answer 7

Correct Answers:

100

Rationale :

📏Total volume = 150 mL over 90 minutes.

🧪Convert minutes to hours: 90 ÷ 60 = 1.5 hours.

📦150 ÷ 1.5 = 100 mL/hour.

💉This ensures the medication is infused evenly over the prescribed time.

📌Core Message

Divide total volume by infusion time in hours to determine mL/hour rate.

Answer 8

Correct Answers:

1.5

Rationale :

🧪0.075 mg = 75 mcg.

📏Tablet = 50 mcg → 75 ÷ 50 = 1.5 tablets.

💊Dosing thyroid medications with precision helps manage hypothyroidism effectively.

⚕️Splitting scored tablets ensures safe administration of partial doses.

📌Core Message

Match the converted dose to available tablet strength to find number of tablets.

Answer 9

Correct Answers:

0.5

Rationale :

📏Vial contains 10,000 units/mL; prescribed dose is 5,000 units.

🧪5,000 ÷ 10,000 = 0.5 mL.

💉Administering this IV bolus slowly prevents adverse reactions like bleeding.

⚕️Heparin requires precise measurement due to its potent anticoagulant effect.

📌Core Message

Use unit concentration to calculate the volume for a bolus dose.

Answer 10

Correct Answers:

83

Rationale :

📏Total volume = 2,000 mL over 24 hours.

🧪2,000 ÷ 24 = 83.3 ≈ 83 mL/hour.

💉Programming the pump at this rate ensures consistent antibiotic delivery.

⚕️Maintaining therapeutic drug levels is vital in meningitis treatment.

📌Core Message

Divide total infusion volume by total time to determine mL/hour pump rate.

HESI RN Dosage Calculation 2023 Exam-3

No.

5 :
The pharmacy delivers an IV infusion of sodium chloride 100 mL with regular insulin 50 units for a client in diabetic ketoacidosis. The prescription rate is 10 units/hour. How many mL/hour should the nurse program the infusion pump? (Enter numeric value only.)

6 :
The healthcare provider prescribes cyanocobalamin injection 100 mcg IM every 3 days for a client with pernicious anemia. The vial is labeled, "1 mg/mL." How many mL should the nurse administer? (Enter numerical value only. If rounding is required, round to the nearest tenth.)

7 :
The healthcare provider prescribes ganciclovir 375 mg intravenously (IV) every 12 hours to infuse over 90 minutes. The pharmacy delivers ganciclovir 375 mg in a 150 mL IV bag. How many mL/hour should the nurse program the infusion pump? (Enter a whole number only.)

8 :
The healthcare provider prescribes 0.075 mg of levothyroxine PO daily. The medication is labeled, "50 mcg tablets." How many tablets should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest tenth.)

9 :
Heparin 5,000 units IV is prescribed as a loading dose, to be administered over 5 minutes for a client with thrombophlebitis. The vial is labeled, "10,000 units/mL." How many mL should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest tenth.)

HESI RN Dosage Calculation 2023 Exam-3

No.

5 : The pharmacy delivers an IV infusion of sodium chloride 100 mL with regular insulin 50 units for a client in diabetic ketoacidosis. The prescription rate is 10 units/hour. How many mL/hour should the nurse program the infusion pump? (Enter numeric value only.)

6 : The healthcare provider prescribes cyanocobalamin injection 100 mcg IM every 3 days for a client with pernicious anemia. The vial is labeled, "1 mg/mL." How many mL should the nurse administer? (Enter numerical value only. If rounding is required, round to the nearest tenth.)

7 : The healthcare provider prescribes ganciclovir 375 mg intravenously (IV) every 12 hours to infuse over 90 minutes. The pharmacy delivers ganciclovir 375 mg in a 150 mL IV bag. How many mL/hour should the nurse program the infusion pump? (Enter a whole number only.)

8 : The healthcare provider prescribes 0.075 mg of levothyroxine PO daily. The medication is labeled, "50 mcg tablets." How many tablets should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest tenth.)

9 : Heparin 5,000 units IV is prescribed as a loading dose, to be administered over 5 minutes for a client with thrombophlebitis. The vial is labeled, "10,000 units/mL." How many mL should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest tenth.)

5 :
The pharmacy delivers an IV infusion of sodium chloride 100 mL with regular insulin 50 units for a client in diabetic ketoacidosis. The prescription rate is 10 units/hour. How many mL/hour should the nurse program the infusion pump? (Enter numeric value only.)

6 :
The healthcare provider prescribes cyanocobalamin injection 100 mcg IM every 3 days for a client with pernicious anemia. The vial is labeled, "1 mg/mL." How many mL should the nurse administer? (Enter numerical value only. If rounding is required, round to the nearest tenth.)

7 :
The healthcare provider prescribes ganciclovir 375 mg intravenously (IV) every 12 hours to infuse over 90 minutes. The pharmacy delivers ganciclovir 375 mg in a 150 mL IV bag. How many mL/hour should the nurse program the infusion pump? (Enter a whole number only.)

8 :
The healthcare provider prescribes 0.075 mg of levothyroxine PO daily. The medication is labeled, "50 mcg tablets." How many tablets should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest tenth.)

9 :
Heparin 5,000 units IV is prescribed as a loading dose, to be administered over 5 minutes for a client with thrombophlebitis. The vial is labeled, "10,000 units/mL." How many mL should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest tenth.)