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

The healthcare provider prescribes an IV bolus of diltiazem 0.25 mg/kg for a client with atrial fibrillation. The client weighs 178 pounds. How many mg should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest whole number.)

Correct Answer: 20

Rationale: Weight: 178 pounds / 2.2 = 80.91 kg. Dose: 0.25 mg/kg × 80.91 = 20.2275 mg, rounded to 20 mg.

Question 2 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 3 of 5

Dobutamine hydrochloride 2 mcg/kg/min is prescribed for a client weighing 165 pounds. The solution is mixed with 50 mg of dobutamine In 1,000 mL of DW. The nurse should set the Infusion pump to deliver how many mL/hour? (Enter numeric value only.)

Correct Answer: 180

Rationale: Weight: 165 / 2.2 = 75 kg. Dose: 2 mcg/kg/min × 75 = 150 mcg/min × 60 = 9000 mcg/hour. Concentration: 50 mg = 50000 mcg / 1000 mL = 50 mcg/mL. Volume = 9000 / 50 = 180 mL/hour.

Question 4 of 5

A client is brought to the emergency center for fluid replacement after running a marathon, and the healthcare provider prescribes a 500 mL bolus of 0.9% normal saline to be administered over 4 hours. The Infusion set delivers 10 gtt/mL, so the nurse should regulate the Infusion to deliver how many gtt/minute? (Enter numerical value only. If rounding is required, round to the nearest whole number.)

Correct Answer: 21

Rationale: Infusion rate: 500 mL / 4 hours = 125 mL/hour. Flow rate: (125 × 10) / 60 = 20.833 gtt/min, rounded to 21.

Question 5 of 5

A client is receiving a secondary infusion of azithromycin 500 mg in 500 mL of normal saline (NS) to be infused over 2 hours. How many mL/hour should the nurse program the infusion pump? (Enter numerical value only.)

Correct Answer: 250

Rationale: Infusion rate = 500 mL / 2 hours = 250 mL/hour.

Similar Questions

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.)
The nurse is preparing to administer methylprednisolone 40 mg IV. The medication vial is labeled '125 mg per 2 mL.' How many mL of medication should the nurse administer? (Enter numeric value only. If rounding is required, round to the nearest hundredth.)
A client is receiving one liter of DW 0.45% normal saline IV every 8 hours by gravity infusion. The IV tubing has a drip factor of 12 gtt/mL. The nurse should regulate the IV to deliver how many drops per minute? (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.)
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.)

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