Paediatric Formulae

GENERAL

• Weight = (Age + 4) x2 (1-10yrs)
• Vital signs

AIRWAY

• Weight\Age ETT Length @ lips
• 2yrs (Age\4) + 4 (age\2)+12
• Length @ nose = (age\2) + 15
• Aim for leak @ 20-30cmH2O in uncuffed
• Length PO (Age\2) + 12
• LMA #1 – < 6.5kg (4mL)
  LMA #1.5 – < 13kg
  LMA #2 – < 20kg (10mL)
  LMA #2.5 – < 25kg
  LMA #3 – 20-30kg (14mL)
  LMA #4 – > 30kg (20mL)
• Air = (Size – 1) x 10mL
• Dexamethasone

BREATHING

• O2
• Salbutamol
• Adrenaline nebs

CIRCULATION

• Epinehriene 0.1mL\kg of 1:10,000
• Fluid Bolus 10-20mL\kg N\S
  Maintenance 4, 2, 1 -> 2.5% Dex + 1/2 N\S
• Neonatal Art Line – 1.5mL\hr N\S
• 3rd space loss – minor 2mL\kg\hr, major
• Blood volume = 75mL\kg

• Defibrillation 4 J\kg
• Systolic BP = (Age x 2) + 80

• Amiodarone 5mg\kg

Fluids

• Crystalloid 20 mL/kg for resuscitation
• RBC units 10mL\kg
• Platelets 10mL\kg
• FFP 15mL\kg
• Cryo 5mL\kg

DRUGS FOR RSI/ RESUSCITIATION

• Atropine 20mcg\kg
• Propofol 4mg\kg
• Thiopentone 3-6mg\kg
• Suxamethonium
• Larynygospasm 0.5-1mg\kg
• RSI – neonates 2mg\kg, childrens 1mg\kg
• IM dose >3mg\kg
• Rocurnonium 0.6-1mg\kg
• Vecuronium 0.1mg\kg
• Atracurium 0.6-1mg\kg