#Maintenance fluid calculator how to

Believe me, you’ll want to know how to do this. Examples: Calculate the maintenance fluid requirements for a child whose. Electrolytes (mEq/L H2O and mmol/L H2O) mL/day. Holliday-Segar Formula for Maintenance Fluid Requirements by Weight. That way you know how much you should have already given at those intervals.Īnd there you have it! This will be the amount of fluids you will give for the first three hours. Maintenance Fluids 1500- 2000 mL/ M2/day. The maintenance fluids calculator (MIVF calculator) uses the Holliday-Segar method and the 4-2-1 rule to determine the daily and hourly need for fluids in children. Holliday-Segar Formula for Maintenance Fluid Requirements by Weight / Holliday-Segar Formula for Maintenance Fluid Requirements by Weight. So to make things even more simple, its nice to have a running total. You’ll find out really quick that fluids can get away from you (either being ahead or behind in schedule).

Now all you need to do is add them up to know the total amount to give per hour. This would mean that you need to replace about 168 ml for every hour (42 kg x 4 ml). So, depending on the surgery, the losses here range far and wide. These losses account for fluids that have moved into the third space (essentially out of the vascular space). Looking good! Well, for some surgeries there’s what’s called surgical fluid losses. For example:Įasy, right? Well while your replacing those fluids, they still have an hourly maintenance that needs to be accounted for! We decided that was 82ml per hour. The first hour would be half the volume, while the second and third hours would replace the remaining volume in quarters. This would typically be replaced over 3 hours. So, if the patient had been NPO for 12 hours, they would need 984 ml of fluid to get caught up (82 ml x 12 hours). You can do the 4-2-1 Rule in these cases too – the math all works out the same.

Maintenance fluids Special care nurseries. As long as the patient is over 60 kg, just add 40 ml to the weight. If a neonate weighs less than birth weight, utilise birth weight in all fluid calculations, unless specified Background. This would be the hourly needs of the patient.Ĭalculating the maintenance for adults is usually quite easy. So, for a 42 kg patient it would go like this: This is as follows:Ĥ ml/kg for the first 10 kg of the patient’s weightĢ ml/kg for the second 10 kg of the patient’s weight Please let us know if you still have any questions regarding the calculation.Hourly maintenance is determined by the 4-2-1 rule.

You would need to specify the option you would like to use by referencing the options from the gray Table. The Fluid Rates and how those are calculated are below. SmartFlow does only have the capacity to allow one fluid calculation rate per hospital. There are additional ways that the fluid rate can be calculated and if you would like the rate calculation to be changed for your practice you can reach out to SmartFlow Support and advise them on the standard fluid rate you would like to use. This is a standard calculation for fluid rate based on RER of the healthy patient.įor Reference view: Veterinary Emergency Critical Care Manual, by Karol A. Listed below is the formula that we use to calculate fluid rates: For your convenience, the SmartFlow application automatically calculates fluid rates based on the patient weight. The fluid calculator applies the same way to any item added in the Fluids section (including Bolus rate) of the flowsheet or anesthetic sheet.

Maintenance fluid calculator