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 child who weighs 42 kg receives a prescription for methylprednisolone succinate 1.5 mg/kg/day intravenously in divided doses every 6 hours. The medication is available in 40 mg/mL vials. How many mL should the nurse administer with each dose? (Enter numerical value only. If rounding is required, round to the nearest tenth.)

Correct Answer: 0.4

Rationale: Daily dose: 1.5 mg/kg/day × 42 = 63 mg/day. Per dose (every 6 hours, 4 doses/day): 63 / 4 = 15.75 mg. Volume: 15.75 / 40 = 0.39375 mL, rounded to 0.4 mL.

Question 2 of 5

A client is receiving a 200 mL bolus of 0.9% normal saline (NS) to be infused over 20 minutes. The nurse should set the Infusion pump to deliver how many mL/hour? (Enter numeric value only.)

Correct Answer: 600

Rationale: Infusion rate = 200 mL / (20 / 60) hours = 600 mL/hour.

Question 3 of 5

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.)

Correct Answer: 0.41

Rationale: Volume: 4800 mg / (400 mg / 5 mL) = 12 mL. Convert to ounces: 12 × 0.033814 = 0.405768 oz, rounded to 0.41 oz.

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

The nurse is initiating a 500 mL IV of normal saline at 60 mL/hour for a client with heart failure. How many hours should the IV infuse? (Enter numeric value only. If rounding is required, round to the nearest tenth.)

Correct Answer: 8.3

Rationale: Duration = 500 mL / 60 mL/hour = 8.333 hours, rounded to 8.3.

Similar Questions

The healthcare provider prescribes heparin 1,400 units/hour intravenously (IV). The IV bag contains heparin 20,000 units in 250 mL dextrose 5% in water. How many mL/hr should the nurse program the infusion pump to deliver? (Enter numeric value only. If rounding is required, round to the nearest whole number.)
The healthcare provider prescribes 1 liter of lactate Ringers to infuse in 8 hours. The IV administration set delivers 15 gtt/mL. How many mL/hour should the nurse program the infusion pump? (Enter numeric value only. If rounding is required, round to the nearest whole number.)
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.)
A client is receiving a secondary infusion of vancomycin 1,500 mg in 250 mL to be infused over two hours. The IV administration set delivers 10 gtt/mL. How many gtt/min should the nurse regulate the infusion? (Enter numerical value only. If rounding is required, round to the nearest whole number.)
A client scheduled for coronary artery bypass surgery is to receive an intravenous infusion of 1 gram cefazolin in 50 mL 0.9% Sodium Chloride, USP over 30 minutes. The nurse should program the infusion pump to deliver how many mL/hour? (Enter numeric value only, as a whole number.)

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