Table 1 Outcome Parameters

Primary Endpoint:

• Discharge with good neurological outcome (CPC 1 or 2)

Secondary Endpoints:

• ROSC during out-of-hospital care

• Survival (ROSC) at hospital admission or admission under ongoing CPR

• 24 h survival

• Survival at hospital discharge or 30d-survival

Additional Parameters:

• age (years)

• gender (m/f/n)

• etiology of cardiac arrest (non-traumatic vs. traumatic)

• witness of cardiac arrest (no witness, lay-person, EMS personnel)

• initial heart rhythm (v-fib,v-tach, asystole, PEA)

• bystander-CPR (yes/no)

• EMS response time (minutes) in groups

• duration of resuscitation (EMS on-site arrival until hospital admission in minutes)

• out-of-hospital administration of medication (e.g. adrenaline, amiodarone) with dose, frequency and route (IV, IO, ET, IO + IV, ET + IV, IO + ET + IV)