## How do you calculate maintenance IV fluids?

Maintenance Fluid Rate is calculated based on weight.

1. 4 mL / kg / hour for the first 10kg of body mass.
2. 2 mL / kg / hour for the second 10kg of body mass (11kg – 20kg)
3. 1 mL / kg / hour for any kilogram of body mass above 20kg (> 20kg)

What is the 4 2 1 rule for maintenance fluids?

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.

What do you use for maintenance fluids?

Isotonic crystalloids Mixed isotonic solutions (i.e., containing glucose) are preferred as maintenance fluids (see “Mixed crystalloid solutions”).

### What would the rate of maintenance fluid be for a 25 kg child?

For infants 3.5 to 10 kg the daily fluid requirement is 100 mL/kg. For children 11-20 kg the daily fluid requirement is 1000 mL + 50 mL/kg for every kg over 10. For children >20 kg the daily fluid requirement is 1500 mL + 20 mL/kg for every kg over 20, up to a maximum of 2400 mL daily.

What are maintenance IV fluids?

Intravenous fluids may be required as a bolus infusion for resuscitation or as a continuous infusion when sufficient fluids cannot be ingested orally. The goal of maintenance intravenous fluids is to preserve the extracellular volume while maintaining a normal electrolyte balance.

How do you calculate fluid deficit maintenance?

The first step is to calculate the fluid deficit. This is determined by multiplying the percentage dehydration times the patient’s weight (e.g. 10% dehydration in a 10 kg child: 10% of 10 Kg = 1 kg = 1 liter). Subtract any boluses from this volume (e.g. 1 liter – 400 ml of boluses = 600 ml).

#### When do you use the 421 rule?

Traditionally, the first step in determining the hourly fluid requirements for a child described by Holliday and Segar and coined as the “4/2/1” rule: For children < 10 kg their hourly fluid needs are body weight (kg) x 4. For children 10-20 kg, their hourly fluid needs are 40 ml + (BW – 10 kg) x 2 .

What is a maintenance fluid?

Maintenance fluid therapy as defined by Holliday and Segar is a water and electrolyte prescription designed to replace anticipated water and electrolyte losses over the ensuing 24-hour period in primarily euvolemic children [4].

What is the 24 hour fluid requirement for a child weighing 32 kg?

Pediatric patients have weight-based minimum fluid intake requirements….Pediatric Fluid Management.

Weight Minimum fluid intake per hour Minimum fluid intake per shift
6 kg 24 cc/hour 192 cc/shift
7 kg 28 cc/hour 224 cc/shift
8 kg 32 cc/hour 256 cc/shift

## Is normal saline a maintenance fluid?

Normal Saline (0.9% NaCl) has 154 mEq/L of NaCl. Therefore, D5 0.2 NS with 20 mEq of KCl per liter is an appropriate maintenance fluid for all people.