HESI RN
RN Hesi Med Surg Dosage Calculations Questions
Extract:
Question 1 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.
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 enoxaparin 1 mg/kg subcutaneously every 12 hours for a client who weighs 132 pounds. The medication is available in 60 mg/0.6 mL prefilled syringe. How many mL should the nurse administer per day? (Enter numerical value only.)
Correct Answer: 1.2
Rationale: Weight: 132 × 0.454 = 59.928 kg. Dose: 1 mg/kg × 59.928 = 59.928 mg. Volume per dose: (59.928 × 0.6) / 60 = 0.59928 mL. Daily volume: 0.59928 × 2 = 1.19856 mL, rounded to 1.20 mL.
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
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.