Well-orchestrated EMS calls demand a global size-up followed by a focused assessment and treatment plan. Use the PAT to rapidly answer the questions, "How sick?" and "How quick?" Knowledge of the child's physiological status allows you to make appropriate decisions about triage, how you should react, what equipment to prepare and what treatment and transport protocols to use. The PREP scheme gives you a consistent and reliable approach for every pediatric call, facilitating focused management for an unstable child and a more relaxed and confident encounter for the stable child and their family.