The formula used for calculating the volume of required maintenance fluid and electrolyte. It is calculated based on the body weight to only represent the empiric average caloric expenditure. The first 10 kg of body weight accounts for 100 kcal/kg/day or equals to 100 mL/kg of maintenance fluid. The second 10 kg of body weight accounts for 50 kcal/kg/day or equals to 50mL/kg of maintenance fluid. And for every kg above 20 kg of body weight accounts for 20 kcal/kg/day or equals to 20mL/kg of maintenance fluid. The amount of required maintenance Natrium is 3mEq/100kcal/day. The amount of required maintenance Chloride is 2mEq/100kcal/day. And the amount of required maintenance Kalium is 2mEq/100kcal/day. References: 1. Holliday MA, Segar WE. The maintenance need for water in parenteral fluid therapy. Pediatrics. 1957; 19:823–832. 2. Holliday MA, Segar WE, Friedman A. Reducing errors in fluid therapy management. Pediatrics. 2003;111(2):424–5. 3. Meyers RS. Pediatric fluid and electrolyte therapy. The journal of pediatric pharmacology and therapeutics : JPPT : the official journal of PPAG. 2009;14(4):204–11.
To calculate the volume of required maintenance fluid and electrolyte (Na, Cl, and K).
To evaluate the volume of required maintenance fluid and electrolyte (Na, Cl, and K) per 24 hours. The simplified formula is to evaluate the volume of required maintenance fluid per hour. The formula is to be used in the consideration that it is based on the caloric expenditure of average individual condition, which is approximated to the body weight.