34.1 The retrieval plan should focus on initial stabilisation of the child. Local resources are very likely to be overwhelmed by such a case and the team should not assume that appropriate algorithms have been followed. Advanced airway management is possible and drug calculations should be performed based on a weight estimate. In this case, the relevant formula ([age + 4] x 2) would give 11 kg. This can be rounded to 10 kg for mathematical ease. The doses calculated in the back of the aircraft are an estimate and may need modification after assessment of the child but they will serve as a guide and may prevent major drug dose errors. Some services will carry pre-prepared adjuncts for paediatric drug calculation (e.g. Broselow tape). It is prudent to use a calculator and to cross-check drug calculations with another member of the PHR team. If possible, ask the tasking agency to obtain an accurate weight from the clinic.