A patient is to receive 1 liter of lactated Ringer's solution over 8 hours. What should the infusion pump be programmed to deliver in mL per hour?

• A. 125 mL/hour
• B. 100 mL/hour
• C. 150 mL/hour
• D. 200 mL/hour

Answer: (A)

Infusion rate equals total volume divided by time. Convert 1 liter to milliliters (1 L = 1000 mL). Then divide by 8 hours: 1000 mL ÷ 8 h = 125 mL per hour. So the pump should be set to deliver 125 mL every hour to administer 1 liter over 8 hours.