A patient is receiving Hartmann's solution at 125 mL/h. How many milliliters will be delivered in 3 hours?

A patient is receiving Hartmann's solution at 125 mL/h. How many milliliters will be delivered in 3 hours?

• A. 375 mL
• B. 300 mL
• C. 450 mL
• D. 125 mL

Answer: (A)

Volume comes from multiplying the infusion rate by the time: Volume = Rate × Time. With a rate of 125 mL per hour and a duration of 3 hours, the delivered amount is 125 × 3 = 375 mL. The units cancel properly (mL/h × h = mL), giving 375 mL as the total. This shows how changing the time scales the amount delivered at a constant rate.

Volume comes from multiplying the infusion rate by the time: Volume = Rate × Time. With a rate of 125 mL per hour and a duration of 3 hours, the delivered amount is 125 × 3 = 375 mL. The units cancel properly (mL/h × h = mL), giving 375 mL as the total. This shows how changing the time scales the amount delivered at a constant rate.