Part 1 in intensive care unit :  Inclusion Criteria:  Patients in vital distress taken in charge in intensive care unit : transported by the specialist mobile emergency units, transferred from an other unit of the Besancon University Hospital or from a peripheral hospital on medical decision Children from 0 to 15 years  Exclusion Criteria:  Premature newborns and patients transported by the specialist mobile emergency units or transferred from an other unit of the Besancon University Hospital on medical decision not presenting a vital emergency following evaluation of the medical team of the intensive care unit Subject being in the period of exclusion from another study or provided by the national volunteer file  Part 2 in simulation :  Inclusion criteria  - Expert teams of doctor and paramedics (10 from pediatric intensive care unit and specialist mobile emergency units) and non expert teams of doctor and paramedics (10 from pediatric medicine and pediatric emergencies units)  Exclusion criteria  Non-consenting doctor or paramedic Doctor or paramedic who has worked at night for less than 48 hours Care givers under guardianship ou curatorship