A patient is receiving fluid from two IV lines. One line is running at 65 mL/h; the other at 70 mL/h. What volume would the patient receive via IV over 12 hours?

A patient is receiving fluid from two IV lines. One line is running at 65 mL/h; the other at 70 mL/h. What volume would the patient receive via IV over 12 hours?

• A. 1560 mL
• B. 1620 mL
• C. 1860 mL
• D. 1680 mL

Answer: (B)

When two IV lines run at the same time, you add their hourly flow rates to get the total infusion rate. So the total rate is 65 mL/h + 70 mL/h = 135 mL/h. Over 12 hours, the patient would receive 135 mL/h × 12 h = 1620 mL. The correct total is 1620 mL.

When two IV lines run at the same time, you add their hourly flow rates to get the total infusion rate. So the total rate is 65 mL/h + 70 mL/h = 135 mL/h. Over 12 hours, the patient would receive 135 mL/h × 12 h = 1620 mL. The correct total is 1620 mL.