4ml/kg/tbsa has been the standard formula used in most ed settings in Australia and ANZBA has further endorsed this for adults.
Most Paediatric centres in Australia actually suggest 2 or 3 ml/kg / tbsa – which is a modified formula
Hartmanns is the suggested fluid

Remember to provide maintenance in children split between
NGT 10 ml/ hr as feeds or ors
And
Iv Hartmanns 5% dextrose.

Remember to suntract any bolus NS from parklands.

Summary :

If shock – NS 10-20ml/kg

Modified parklands – 2 or 3 ml/kg/tbsa Hartmanns
( sorts our deficit)

Maintenance
10ml/hr NGT ors or milk
Iv Hartmanns 5% dextrose.

Assess for losses

Check out :
tpched.org

https://anzba.org.au/

rch.org.au