IV flow rate example (math) PDF

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iv flow rate math examples...

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Example: The provider has ordered 1,000 mL 0.9% sodium chloride to infuse over 8 hr. You have a macrodrip tubing with a drop factor of 15 gtt/mL available. Calculate how many gtt/min to set as the IV flow rate. Step 1: What is the unit of measurement you need to calculate? Drops per minute

Step 2: What is the total infusion volume you need? (volume needed = desired)

Step 3: What is the time you have available for the infusion?

Step 4: Do you need to convert the units of measurement?

Cross multiply and solve for x.

Step 5: Set up an equation and solve for x with x representing the flow rate in drops per minute.

Step 6: Round if necessary using general rounding rules.

Step 7: Reassess to determine if the IV flow rate makes sense.

Example: The provider has ordered ranitidine (Zantac) 50 mg in 100 mL 0.9% sodium chloride intravenous piggyback to be infused over 20 min. You have a macrodrip tubing with a drop factor of 10 gtt/mL. Calculate how many gtt/min to set as the IV flow rate. Step 1: What is the unit of measurement you need to calculate?

Step 2: What is the total infusion volume you need? (volume needed = desired)

Step 3: What is the time you have available for the infusion?

Step 4: Do you need to convert the units of measurement?

Step 5: Set up an equation and solve for x with x representing the flow rate in drops per minute.

Step 6: Round if necessary using general rounding rules.

Step 7: Reassess to determine if the IV flow rate makes sense.

Example: The provider has ordered 600 mL of 5% dextrose in water to infuse over 8 hr. Determine how many mL/hr to set the IV pump to deliver. Step 1: What is the unit of measurement you need to calculate?

Step 2: What is the total infusion volume you need? (volume needed = desired)

Step 3: What is the time you have available for the infusion?

Step 4: Do you need to convert the units of measurement?

Step 5: Set up an equation and solve for x with x representing the flow rate in mL per hour.

Step 6: Round if necessary using general rounding rules.

Step 7: Reassess to determine if the IV flow rate makes sense.

Example: The provider has ordered amiodarone (Cordarone) 300 mg in 100 mL to be infused over 30 min. Determine how many mL/hr to set the IV pump to deliver. Step 1: What is the unit of measurement you need to calculate?

Step 2: What is the total infusion volume you need? (volume needed = desired)

Step 3: What is the time you have available for the infusion?

Step 4: Do you need to convert the units of measurement?

Step 5: Set up an equation and solve for x with x representing the flow rate in mL per hour.

Step 6: Round if necessary using general rounding rules.

Step 7: Reassess to determine if the IV flow rate makes sense....