Order: Tagamet 300 mg IVPB q8hr. The medication has been added to 50 mL DSW to infuse over 30 minutes. Drop factor: 10 gtt/ml Determine rate in gtt/min.

Given:

Volume of fluid: 2500 mL

Infusion time: 8 hours

Drop factor: 15 gtt/mL

Formula:

Flow rate (gtt/min) = (Volume (mL) / Time (hr)) x Drop factor (gtt/mL) / 60 min/hr

Step 1: Calculate the infusion rate in mL/hr:

Infusion rate (mL/hr) = Volume (mL) / Time (hr)

Infusion rate (mL/hr) = 2500 mL / 8 hr

Infusion rate (mL/hr) = 312.5 mL/hr

Step 2: Calculate the flow rate in gtt/min:

Flow rate (gtt/min) = (Infusion rate (mL/hr) x Drop factor (gtt/mL)) / 60 min/hr

Flow rate (gtt/min) = (312.5 mL/hr x 15 gtt/mL) / 60 min/hr

Flow rate (gtt/min) = 4687.5 gtt/hr / 60 min/hr

Flow rate (gtt/min) = 78.125 gtt/min

Step 3: Round to the nearest whole number:

Flow rate (gtt/min) ≈ 78 gtt/min

Given:

Volume of fluid: 50 mL

Infusion time: 1 hour (60 minutes)

Drop factor: 15 gtt/mL

Formula:

Flow rate (gtt/min) = (Volume (mL) / Time (min)) x Drop factor (gtt/mL)

Step 1: Calculate the infusion rate in mL/min:

Infusion rate (mL/min) = Volume (mL) / Time (min)

Infusion rate (mL/min) = 50 mL / 60 min

Infusion rate (mL/min) = 0.83 mL/min

Step 2: Calculate the flow rate in gtt/min:

Flow rate (gtt/min) = Infusion rate (mL/min) x Drop factor (gtt/mL)

Flow rate (gtt/min) = 0.83 mL/min x 15 gtt/mL

Flow rate (gtt/min) = 12.5 gtt/min

Step 3: Round to the nearest whole number:

Flow rate (gtt/min) ≈ 13 gtt/min