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HESI Dosage Calculations Practice Exam Practice Questions and Answers | 100% Pass

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HESI Dosage Calculations Practice Exam Practice Questions and Answers | 100% Pass A client with cardiogenic shock weighs 220 lb and is receiving dopamine at the rate of 3 mcg/kg/minute. The solution strength available is dopamine 400 mg in 250 ml of D5W. The nurse should set the infusion pump t...

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  • September 14, 2024
  • 18
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • Dosage Calculation
  • Dosage Calculation
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©SOPHIABENNETT_2024/2025 EXAM SERIES Monday, September 2, 2024 9:52 AM


HESI Dosage Calculations Practice Exam Practice
Questions and Answers | 100% Pass


A client with cardiogenic shock weighs 220 lb and is receiving dopamine at the rate of 3

mcg/kg/minute. The solution strength available is dopamine 400 mg in 250 ml of D5W.

The nurse should set the infusion pump to deliver how many ml/hour? (Enter numeric

value only. If rounding is required, round to the nearest tenth.) - Answer✔️✔️-11.3




First, convert pounds to kg, 220 lb : X = 2.2 lb : 1 kg = 100 kg. Next, calculate the

dosage per minute, 3 mcg/kg/min x 100 kg = 300 mcg/min. Convert mcg/min to

mcg/hour, 300 mcg/min x 60 min=18,000 mcg/hour. Convert mcg/hr to mg/hour, 18,000

mcg/hr = 18.0 mg/hour. Calculate the rate, 400 mg : 250 ml = 18 mg : X ml 400X = 4500

X = 11.25 = 11.3 ml. So, 18 mg/11.3 ml should be infused at 11.3 ml/hour.

A client with hypertension who weighs 72.4 kg is receiving an infusion of nitroprusside

(Nipride) 50 mg in D5W 250 ml at 75 ml/hour. How many mcg/kg/minute is the client

receiving? (Enter numeric value only. If rounding is required, round to the nearest

tenth.) - Answer✔️✔️-3.5



Calculate the mg/hour infusing, 50 mg : 250 ml = X : 75 ml 250X = 3750 and X = 15

mg/hour. Next, convert mg/hr to mcg/hour, 15 mg/hour = 1 mg / 1000 mcg = 15,000

mcg/hour, then divide by 60 min = 250 mcg/minute. Lastly, 250 mcg/72.4 kg/min = 3.45

= 3.5 mcg/kg/minute.



Page | 1

, ©SOPHIABENNETT_2024/2025 EXAM SERIES Monday, September 2, 2024 9:52 AM


A client who weighs 70 kg is receiving a dopamine solution of 800 mg/500 ml normal

saline at 5 ml/hour. How many mcg/kg/minute is the client receiving? (Enter numeric

value only. If rounding is required, round to the nearest tenth.) - Answer✔️✔️-1.9



To change ml/hour to mcg/kg/minute, use the formula: desired rate (5 ml/hour) / volume

available (500 ml) x dose available (800 mg) = 8 mg/hour. Next, convert milligrams/hour

to mcg/kg/minute: mg (8) x 1000 / kg (70) / 60 minutes = 1.904 = 1.9 mcg/kg/minute.

A client is receiving an IV solution of sodium chloride 0.9% (Normal Saline) 250 ml with

amiodarone (Cordarone) 1 gram at 17 ml/hour. How many mg/minute of amiodarone is

infusing? (Enter numeric value only. If rounding is required, round to the nearest tenth.)

- Answer✔️✔️-Convert grams to mg, 1 gram equals 1,000 mg. Using ratio and proportion

- 1,000 mg : 250 ml :: X mg : 1ml 250X= 1,000 so X = 4 mg/ml is the solution

concentration of amiodarone. The infusion rate (ml/hour) x concentration (mg/ml)

divided by 60 minutes/hour 17 ml/hour x 4 mg/ml = 68/60 = 1.13 = 1.1 mg/minute.

A client who weighs 176 pounds is receiving an IV infusion with esmolol hydrochloride

(Brevibloc) at 48 ml/hour. The IV solution is labeled with the concentration of Brevibloc

10 mg/ml. How many mcg/kg/minute is the client receiving? (Enter numeric value only.)

- Answer✔️✔️-100



Convert pounds to kg by dividing 176 pounds by 2.2 pounds = 80 kg. Convert the IV

concentration from mg to mcg. 1 mg : 1000 mcg :: 10 mg : 10,000 mcg. Infusion rate (48

ml/hour) x concentration (10,000 mcg/ml) divided by 60 minutes/hour x 80 kg = 48 x

10,000 divided by 60 x 80 = 480, = 100 mcg/kg/minute.

Page | 2

, ©SOPHIABENNETT_2024/2025 EXAM SERIES Monday, September 2, 2024 9:52 AM


The nurse is preparing the change-of-shift report for a client who has a 265 ml

secondary infusion that was started 2 hours ago at a rate of 85 ml/hour via an infusion

pump. The nurse should report that how many ml remain to be infused by the on-

coming nurse? (Enter numeric value only.) - Answer✔️✔️-95



85 ml x 2 hours = 170 ml has infused. 265 ml (total amount to be infused) - 170 ml

(amount infused) = 95 ml remain to be infused.

A male client receives a prescription for ondansetron hydrochloride (Zofran) 4 mg IV to

prevent postoperative nausea after an inguinal hernia repair. The medication is

available in 2 mg/ml. How many ml should the nurse administer? (Enter numeric value

only.) - Answer✔️✔️-2



Use ratio and proportion, 4 mg : X ml = 2 mg : 1 ml 2X = 4 X = 2

The nurse is preparing to administer Hepatitis B Vaccine, Recombinant (Energix-B) 5

mcg IM to a school-aged child. The vaccine is labeled, 10 mcg/ml. How many ml should

the nurse administer? (Enter numeric value only. If rounding is required, round to the

nearest tenth). - Answer✔️✔️-1 or 0.5



Use ratio and proportion, 5 mcg : X ml :: 10 mcg : 1ml

10X = 5 X = 0.5 ml

A client's daily PO prescription for aripiprazole (Abilify) is increased from 15 mg to 30

mg. The medication is available in 15 mg tablets, and the client already received one

tablet today. How many additional tablets should the nurse administer so the client

Page | 3

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