I-Gel in Out-of-hospital Cardiac Arrest in Norway

Inclusion Criteria: * Out-of-hospital cardiac arrest patients requiring and receiving advanced airway management on ambulance missions. Advanced airway management is defined as the attempted insertion of an airway adjunct (I-Gel, laryngeal tube or ETI) or the administration of ventilatory assistance/support (including bag-mask ventilation (BMV) or other ventilatory support. * Adult patients (\> 18 years). Exclusion Criteria: * Non-adult patients / minors (\< 18 years). * Traumatic cardiac arrest.