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 loratadine suspension 10 mg by mouth once a day. The bottle is labeled 'Loratadine for Oral Suspension, UPS 5 mg per 5 mL.' How many teaspoons should the nurse instruct the client to take? (Enter numerical value only.)

Correct Answer: 2

Rationale: Volume: 10 mg / (5 mg / 5 mL) = 10 mL. Teaspoons: 10 / 5 = 2 teaspoons.

Question 2 of 5

The nurse plans to provide the next shift with the IV fluid balance for a client who had a 440 mL secondary infusion that was started 2 hours ago at a rate of 85 ml/hour via an infusion pump. What is the remaining volume to be infused? (Enter numeric value only.)

Correct Answer: 270

Rationale: Infused volume = 85 mL/hour × 2 hours = 170 mL. Remaining volume = 440 - 170 = 270 mL.

Question 3 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 4 of 5

The nurse is initiating a prescription for Dextrose 2.5% in 0.45% Sodium Chloride (Ds 0.5% NS) at 45 mL/hour for a child with dehydration. The nurse attaches a volume control administration set with a micro-drip chamber to the bag of solution. How many micro-drops/minute should the nurse regulate the infusion? (Enter the numerical value only. If rounding is required, round to the nearest whole number.)

Correct Answer: 45

Rationale: Micro-drip factor = 60 drops/mL. Flow rate = (45 × 60) / 60 = 45 micro-drops/min.

Question 5 of 5

A client who weighs 91 kg receives a prescription for a continuous infusion of dopamine at 3 mcg/kg/min. The solution is labeled, 'Dopamine 400 mg in 5% Dextrose Injection 250 mL.' 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 tenth.)

Correct Answer: 10.2

Rationale: Calculate dose: 3 mcg/kg/min × 91 kg = 273 mcg/min. Convert to hourly: 273 × 60 = 16380 mcg/hour. Concentration: 400 mg = 400000 mcg in 250 mL = 1600 mcg/mL. Infusion rate = 16380 / 1600 = 10.2375 mL/hour, rounded to 10.2.

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