RN Hesi Med Surg Dosage Calculations | Nurselytic

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RN Hesi Med Surg Dosage Calculations Questions

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Question 1 of 5

A client receives a prescription for oxytocin 2 milliunits/min intravenously (IV) for labor augmentation. The IV bag contains oxytocin 20 units in lactated Ringer's 1 liter. How many mL/hour should the nurse program the infusion pump to deliver? (Enter numerical value only.)

Correct Answer: 6

Rationale: Concentration: 20 units = 20000 milliunits in 1000 mL = 20 milliunits/mL. Dose: 2 milliunits/min × 60 = 120 milliunits/hour. Volume = 120 / 20 = 6 mL/hour.

Question 2 of 5

The healthcare provider prescribes filgrastim 5 mog/kg/day subcutaneously for a client who weighs 132 pounds and has just completed chemotherapy. The medication is available in 480 mcg/0.8 mL. How many mL should the nurse administer? (Enter numerical value only. If rounding is required, round to the nearest tenth.)

Correct Answer: 0.5

Rationale: Weight: 132 / 2.2 = 60 kg. Dose: 5 mcg/kg/day × 60 = 300 mcg/day. Concentration: 480 mcg / 0.8 mL = 600 mcg/mL. Volume: 300 / 600 = 0.5 mL. [Note: Document states 500.0 mL, likely a typo; correct calculation yields 0.5 mL.]

Question 3 of 5

A client who weighs 176 pounds receives a prescription for lorazepam 0.05 mg/kg intramuscularly 2 hours before a scheduled procedure. The medication is available in 4 mg/ml vial. How many ml should the nurse administer? (Enter numerical value only.)

Correct Answer: 1

Rationale: Weight: 176 / 2.2 = 80 kg. Dose: 0.05 mg/kg × 80 = 4 mg. Volume: 4 / 4 = 1 mL.

Question 4 of 5

The healthcare provider prescribes a hydration infusion of normal saline to run over 3 hours at 30 mL/kg for a client who is dehydrated and weighs 70 kg. The nurse should program the infusion pump to deliver how many mL/hour? (Enter numeric value only.)

Correct Answer: 700

Rationale: Volume: 30 mL/kg × 70 kg = 2100 mL. Infusion rate = 2100 / 3 = 700 mL/hour.

Question 5 of 5

Filgrastim 5 mcg/kg/day subcutaneous is prescribed for a child with cancer who weighs 88 pounds. The medication is labeled 300 mcg/mL. How many mL should the nurse administer daily to this child? (Enter the numerical value only. If rounding is required, round to the nearest tenth.)

Correct Answer: 0.7

Rationale: Weight: 88 × 0.454 = 39.952 kg. Dose: 5 mcg/kg/day × 39.952 = 199.76 mcg/day. Volume: 199.76 / 300 = 0.66587 mL, rounded to 0.7 mL.

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The healthcare provider prescribes magnesium hydroxide 4800 mg by mouth at bedtime for a client with constipation. The bottle is labeled 'Magnesium Hydroxide Saline Laxative, USP 400 mg per 5 mL.' How many ounces should the nurse instruct the client to take with each dose? (Enter numerical value only.)
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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.)

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