IVF maintenance

4-2-1 Rule

Rule

mL/hr =

• 4 x first 10kg
• 2 x second 10kg
• 1 x every 1kg after

Weight (kg)	Fluid Rate	Example
<10	4 mL/kg per hour	8 kg infant: 4mL/kg per hour x 8 kg
10 to 20	40 mL/h + 2 mL/kg per hour per each add kg	15 kg child: 40 mL/h + 2 mL/kg per hour x 5 kg
>20	60 mL/h + 1 mL/kg per hour per each add kg	30 kg child: 60 mL/h + 1 mL/kg per hour x 10 kg

Chart

Age	WT (kg)	IVF (mL/hr)
Premature	2	8
Newborn	3.5	14
2mo	5	20
4mo	6.5	26
6mo	8	32
8mo	9	36
12mo	10	40
15mo	11	42
2yr	13	46
3yr	15	50
5yr	19	58

 

See Also

Intravenous Fluids (Main)

Source

• PALS (Main)