Evaluating the Performance of Invasive Ventilation During Specialized CPR

Inclusion Criteria: * Adult patients (age 18 or older) * With out-of-hospital cardiorespiratory arrest * For which specialized cardiopulmonary resuscitation is indicated and started * Supported by the SMUR of the Angers University Hospital of Angers, the Necker-Enfants malades University Hospital, the Grenoble University Hospital and the hospital of Annecy-Genevois * And for which invasive mechanical ventilation on Monnal T60 transport respirator is started Exclusion Criteria: * patients for whom it is decided not to perform invasive ventilation and * Patients opposed to participating in research * Patients with a limitation of active therapies * Patients who are not members or beneficiaries of a social security scheme