PARAMEDIC 2: The Adrenaline Trial

INTERVENTION: Intervention: Adrenaline 1 mg every 5 minutes Control: Placebo CONDITION: Out of hospital cardiac arrest ; Circulatory System ; Cardiac arrest PRIMARY OUTCOME: Survival to 30 days post cardiac arrest SECONDARY OUTCOME: 1. Survived event (sustained ROSC, with spontaneous circulation until admission and transfer of care to medical staff at the receiving hospital); 2. Survival to hospital discharge (the point at which the patient is discharged from the hospital acute care unit regardless of neurological status, outcome or destination) 3, 6 and 12 months; 3. Neurological outcome at hospital discharge, 3 and 6 months; 5. Health related quality of life at 3 and 6 months ; 6. Hospital length of stay; 7. Intensive care length of stay INCLUSION CRITERIA: 1. Cardiac arrest in out of hospital environment 2. Advanced life support initiated and/or continued by ambulance service clinician