Question

A client has an order for 500 mL of NS over 3 hours. The drop factor is 15 gtt/mL. How many gtt/min should be given?

Answer 1

42 gtt/min

Explanation:

Amount of fluid to be infused = 500 mL

Time = 3 hours = 3×60 = 180 minutes

Tubing drop factor/mL = 15 gtt/mL

Fussion rate = (Amount of fluid to be infused / time in minutes)

Fussion rate = 500/180 = 2.78 mL/min

gtt/min = Tubing drop factor/mL× Fusion rate

⇒gtt/min = 15×(500/180)

⇒gtt/min = 15×(25/9)

⇒gtt/min = 125/3

⇒gtt/min = 41.67

⇒gtt/min = 42

∴42 drops/min (gtt/min) should be given.