Total volume ml flow rate ml hr infusion time hr for example if you must administer 1 l 1 000 ml of fluid over 4 hours use the first formula to calculate the flow rate like so. So the formula usually goes as.

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Infusion set has drop factor of 20 gtts ml.

Iv drip rate formula. Write your conversion factors in the middle of your paper. The second conversion you need to use is 1 hr 60 min. Flow rate ml hr total volume ml infusion time hr flow rate ml hr 1 000 4.

Considering that intravenous fluid be it a certain substance of just glucose needs to be given at a specific rate this has been decided to be measured in ml hour or drops per min. Total volume x drip factor time flow rate gtt min. The formula for calculating the iv flow rate drip rate is total volume in ml divided by time in min multiplied by the drop factor in gtts ml which equals the iv flow rate in gtts min.

Calculate the iv flow rate for 1200 ml of ns to be infused in 6 hours. This scenario gives you an iv tubing size of 15gtts ml. Let s try an example.

Convert 6 hours to minutes. Iv drip rate 1500 ml 16 gtts ml 12 hours 60 33 gtts per minute. Calculate the iv flow rate for 200 ml of 0 9 nacl iv over 120 minutes.

There are usually at least 2 conversions you need for basic drip rates. The iv tubing size and time. The infusion set is calibrated for a drop factor of 15 gtts ml.

The provider has ordered 1 000 ml lactated ringers to infuse over 8 hours.