A nurse is preparing to administer dextrose 5% in water 350 mL IV to infuse over 3 hr. The drop factor of the manual IV tubing is 10 gtt/mL. The nurse should set the manual IV infusion to deliver how many gtt/min? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)

(Volume in mL * Drop factor) / Time in minutes. The volume is 350 mL, the drop factor is 10 gtt/mL, and the time is 3 hours. Convert the time to minutes, which is 3 hours * 60 minutes/hour = 180 minutes. Multiply the volume by the drop factor: 350 mL * 10 gtt/mL = 3500 gtt. Divide this by the time in minutes: 3500 gtt / 180 minutes ≈ 19.44 gtt/min. After rounding to the nearest whole number, the nurse should set the manual IV infusion to deliver 19 gtt/min.