HESI RN Maternal Newborn I Related

Review HESI RN Maternal Newborn I related questions and content

The healthcare provider prescribes magnesium sulfate 6 grams IV to be infused over 20 minutes for client with preterm labor. The IV bag contains 'Magnesium sulfate 20 grams in dextrose 5% in water 500 mL.' How many mL/hour should the nurse set the infusion pump?

  • A. 450 mL/hour
Correct Answer: A

Rationale: For 6 grams in 20 minutes, 150 mL (6 ÷ 0.04 g/mL) is needed. Infusion rate is 150 mL ÷ 20 min × 60 = 450 mL/hour.