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A 32 kg child needs 72 ml of maintenance fluids per hour using the 4-2-1 rule, totaling 1728 ml per day. Use Maintenance fluid calculator to calculate daily maintenance fluids and fluid flow rate (mL/hr) at once.
24 paź 2024 · In anesthetic practice, this formula has been further simplified, with the hourly requirement referred to as the “4-2-1 rule” (4 mL/kg/hr for the first 10 kg of weight, 2 mL/kg/hr for the next 10 kg, and 1 mL/kg/hr for each kilogram thereafter.
The Maintenance Fluids Calculator calculates maintenance fluid requirements by weight.
To calculate the volume of fluid to be administered according to the 4-2-1 rule, which provides hourly fluid requirements, you can use the following guidelines: For the first 10 kilograms (3-10 kg) — 4 ml/kg/h. For the next 10 kilograms (11-20 kg) — 2 ml/kg/h. For weights above 20 kilograms — 1 ml/kg/h.
The Holliday-Segar formula, developed in the 1950s, 1 is used to calculate the rate of maintenance fluids; it is more commonly known as the “4-2-1” rule. For the first 10 kg of a patient’s weight, the patient requires 4 mL/kg/h. For the next 10 kg, the patient should receive an additional 2 mL/kg/h.
As stated earlier, calculations are done according to the “4-2-1” rule. This rate can be used solely for parental fluid administration or as a goal for the total hourly fluid intake (also taking into account continuous infusions and/or high-volume medications).
