Table 2 Inclusion and exclusion criteria

Estimated age 18–80 years

Traumatic cardiac arrest (including strangulation, electrocution, and patients rescued from avalanches)

Out-of-hospital cardiac arrest

Accidental hypothermia with temperature < 32 °C

Non-traumatic cardiac arrest

Suspected non-traumatic haemorrhage as aetiology of the arrest

Less than 10 min from debut of arrest to start of basic or advanced cardiac life support

Pregnancy (obvious or suspected)

ACLS is established and can be continued

Suspected cerebral haemorrhage as aetiology of the arrest

Patient included to the study site’s E-CPR protocol

Other factors as decided by the treatment team (environmental factors, safety factors, and others)