A patient needs 1500 mL of solution infused over 12 hours. What pump rate is required in mL/h?

A patient needs 1500 mL of solution infused over 12 hours. What pump rate is required in mL/h?

• A. 125 mL/h
• B. 100 mL/h
• C. 150 mL/h
• D. 135 mL/h

Answer: (A)

When setting an infusion pump, the rate is the total volume divided by the total time. So, 1500 mL over 12 hours equals 1500 ÷ 12 = 125 mL per hour. Checking the math: 125 mL/h × 12 h = 1500 mL, which matches the required volume. The other rates would deliver different totals in 12 hours: 100 mL/h would give 1200 mL, 150 mL/h would give 1800 mL, and 135 mL/h would give 1620 mL.

When setting an infusion pump, the rate is the total volume divided by the total time. So, 1500 mL over 12 hours equals 1500 ÷ 12 = 125 mL per hour. Checking the math: 125 mL/h × 12 h = 1500 mL, which matches the required volume.

The other rates would deliver different totals in 12 hours: 100 mL/h would give 1200 mL, 150 mL/h would give 1800 mL, and 135 mL/h would give 1620 mL.