Cardiac arrest & resuscitation

Intra-arrest transport versus continued on-scene resuscitation in patients with out-of-hospital cardiac arrest by first documented rhythm: a nationwide cohort study using time-dependent propensity score sequential matching

Crit CarePublished Nationwide cohort study

Authors' conclusion

Intra-arrest transport and continued on-scene resuscitation showed similar survival among patients with shockable rhythms, whereas continued on-scene resuscitation was associated with better survival among patients with nonshockable rhythms.

Study context

Population
Adults with out-of-hospital cardiac arrest (OHCA) in Japan, 2021–2022, in shockable and nonshockable first-rhythm cohorts13,826 shockable
Exposure
Intra-arrest transport vs Continued on-scene resuscitation
Outcome
Survival at one month or discharge from the hospital within one month
Follow-up
One month
Methodological detailstime-dependent propensity score sequential matching, prospective population-based registry
  • Time-dependent propensity score sequential matching
  • Prospective population-based registry

Main finding

As reported in the abstract

Survival at one month or discharge within one month, by first rhythm
Intra-arrest transport vs Continued on-scene resuscitationCorrected RR (CI)P value
Shockable cohort
1.03(0.96–1.10)
P = 0.443
Nonshockable cohort
0.84(0.78–0.89)
P < 0.001

Observational data: associations, not effects.

Further findings

Subsequent transport in the continued on-scene resuscitation group

More than 90% of patients initially assigned to continued on-scene resuscitation later underwent intra-arrest transport

Original publication

Intra-arrest transport versus continued on-scene resuscitation in patients with out-of-hospital cardiac arrest by first documented rhythm: a nationwide cohort study using time-dependent propensity score sequential matching. Crit Care. Published 22 December 2025. doi:10.1186/s13054-025-05811-y

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