Cardiac arrest & resuscitation

Expedited transfer from the scene for refractory out-of-hospital cardiac arrest in Australia: a prospective, multicentre, parallel, open label, randomised clinical trial

Lancet Respir MedPublished Randomised controlled trial

Authors' conclusion

Among patients with refractory out-of-hospital cardiac arrest, expedited intra-arrest transport did not significantly improve survival with neurologically favourable outcome.

Study context

Population
Adults 18–70 years with witnessed refractory of hospital cardiac arrest (OHCA) of presumed medical cause, bystander cardiopulmonary resuscitation (CPR), initial shockable rhythm or pulseless electrical activity without ROSC after 15 mins of ALS or three rounds of professional resuscitation; greater Sydney, Australia206 enrolled
Participants
197 adults
Comparison
Expedited intra-arrest transport vs standard transport strategy
  • Expeditedn = 102
  • Standardn = 95reference
Primary endpoint
Survival with good neurological outcome (CPC 1-2), stratified by initial rhythm
Follow-up
Hospital discharge
Methodological detailsprospective, parallel, multicentre, open-label, superiority, Follow-up until death or 6 months, Randomised 1:1 at the scene by paramedics; masking not possible
  • Prospective
  • Parallel
  • Multicentre
  • Open-label
  • Superiority
  • Follow-up until death or 6 months
  • Randomised 1:1 at the scene by paramedics; masking not possible

Primary result

As reported in the abstract

Survival with good neurological outcome (CPC 1-2)
Each group vs standardRisk difference in survival with good neurological outcome (95% CI)
Expedited
−1.1%(−12.2% to 10.0%)
Each group vs standardAdjusted RR of survival with good neurological outcome (95% CI)P value
Expedited
0.95(0.50–1.8)
P = 0.87

Safety

Hypoxic brain injury

  • Hypoxic brain injury: proportions of the 35 patients with hypoxic brain injury

Serious adverse events

Patients with a serious adverse event
38 (19%)
Hypoxic brain injury
35 (92%)
Cerebral stroke (standard arm)
1 (3%)
Pulmonary haemorrhage (standard arm)
1 (3%)
Gastrointestinal haemorrhage (standard arm)
1 (3%)
Adverse events evenly distributed between arms; no unanticipated adverse events

Original publication

Expedited transfer from the scene for refractory out-of-hospital cardiac arrest in Australia: a prospective, multicentre, parallel, open label, randomised clinical trial. Lancet Respir Med. Published 22 August 2025. doi:10.1016/s2213-2600(25)00130-4

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