The following table sets out equations for estimating paediatric parameters commonly used in general practice and emergency situations.
| Parameter | Equation/correction factor |
|---|---|
| Weight (1) | (3 x age) + 7 |
| Weight (2) | (age + 4) x 2 |
| HR | 160 – (age x 5) |
| Systolic BP | 80 + (age x 2) |
| Endotracheal tube diameter | (age/4) + 4 |
| Endotracheal tube length | (age/2) + 12 |
| Fluid bolus resuscitation (mL) | 20 x body weight (kg) |