Paediatric normal values and guesstimates


Physiological Data

Approx. values for vital signs
Age (yrs) Resp Rate HeartRate Sys BP
<1 30 - 40 110 - 160 70-90
2 - 5 25 - 30 95 - 140 80 - 100
5 - 12 20 - 25 80 - 120 90 - 110
> 12 15 -  20 60 - 100 100 - 120

Fluid Therapy

Daily Fluid requirement
Body Weight Fluid (day) Fluid (hour)
First 10kg 100ml/kg 4 ml/hr
Second 10kg 50ml/kg 2 ml/hr
Sebsequent kg 20ml/kg 1 ml/hr

Standard resuscitation fluid = 20 ml/kg

Estimating a childs weight

Weight (kg) = 3(age) + 7

Tidal volume = 7-10 ml/kg

Blood vol = 100 ml/kg in neonates, 80ml/kg by one year of age

Systolic BP = 80 + (Age x 2)

Body surface area (m2) = (( height in cm X weight in cm ) / 3600) -2


ETT

Estimate: Tube diameter = diameter child�s little finger or nostril

Formal ETT zize:

Internal diameter (mm) = (age/4)+4 in a child over one year

Length (cm) = (age/2)+12 for an oral tube

Full term neonates usually require a tube diam 3.0 - 3.5mm

Other Tubes

Age Gastric Tube Chest tube Urinary Catheter
Premie newborn
8 Fr
10 - 14 Fr
5 fr feeding
Newborn - 6mo
8 - 10 Fr
12 - 18 Fr
5 - 8 Fr feeding
6 mo - 1 year
10 Fr
14 - 20 Fr
8 Fr
1 - 3 years
10 - 12 Fr
14 - 24 fr
8 10 Fr

These are rough guides only. Use a tube that seems appropriate, and use the largest practicable


Links


Drafted by Dr Ian Higginson 12/09/2003.   Reviewed by Dr Íomhar O' Sullivan 31/01/2005, 09/09/2006, 13/11/2007. Last reviewDr. ÍOS 3/08/12