The nurse must infuse 100 mL of IV fluid over 30 minutes. The tubing drop factor is 20 gtt/mL. How many gtt/min should the nurse regulate? Record the answer using a whole number. Round only at the end of the calculation.

67 gtt/min.

Drops per minute = (mL to infuse × gtt/mL) ÷ minutes.

(100 × 20) ÷ 30 = 66.666…. Round only the final result to the requested whole number: 67.

• Drop factor — The number of drops delivered by the tubing for each milliliter of fluid.
• Gravity infusion — An infusion regulated by counting drops rather than programming a pump.