Calculate the flow rate in ml/hr and gtt/min using the formula method 500 mL D5W in 6hr. Drop factor: 15 gtt/mL.

Given: Volume of fluid: 500 mL Infusion time: 6 hours Drop factor: 15 gtt/mL Formula for mL/hr: Flow rate (mL/hr) = Volume (mL) / Time (hr) Step 1: Calculate the flow rate in mL/hr: Flow rate (mL/hr) = 500 mL / 6 hr Flow rate (mL/hr) = 83.33 mL/hr Formula for gtt/min: Flow rate (gtt/min) = (Volume (mL) / Time (hr)) x Drop factor (gtt/mL) / 60 min/hr Step 2: Calculate the flow rate in gtt/min: Flow rate (gtt/min) = (500 mL / 6 hr) x 15 gtt/mL / 60 min/hr Flow rate (gtt/min) = 83.33 mL/hr x 15 gtt/mL / 60 min/hr Flow rate (gtt/min) = 1250 gtt/hr / 60 min/hr Flow rate (gtt/min) = 20.83 gtt/min Step 3: Round to the nearest whole number: Flow rate (mL/hr) ≈ 83 mL/hr Flow rate (gtt/min) ≈ 21 gtt/min