HESI RN
RN Hesi Med Surg Dosage Calculations Questions
Extract:
Question 1 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 2 of 5
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.)
Correct Answer: 125
Rationale: Infusion rate = 1000 mL / 8 hours = 125 mL/hour.
Question 3 of 5
The healthcare provider prescribed 2 liters of 5% Dextrose in water (DW) to infuse in 24 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.)
Correct Answer: 83
Rationale: Infusion rate = 2000 mL / 24 hours = 83.333 mL/hour, rounded to 83.
Question 4 of 5
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.)
Correct Answer: 200
Rationale: Infusion rate = 100 mL / 0.5 hours = 200 mL/hour.
Question 5 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.