Acute cardiac care & resuscitationDiagnostic or prognostic study

Prehospital Prognostication after Out-of-Hospital Cardiac Arrest in Tertiary Care Centers: The R-EDByUS Score in the JAAM-OHCA Registry

ResuscitationPublished

  • external validation
  • regression-based score
  • JAAM-OHCA Registry

Authors' conclusion

The R-EDByUS score showed good discrimination in the JAAM-OHCA Registry, supporting its use for early risk stratification in cardiogenic OHCA even in tertiary care centers.

Study context

Population
Adult patients with presumed cardiogenic OHCA transported to tertiary care centersprehospital return of spontaneous circulation (ROSC) cohort 3,305 · ongoing cardiopulmonary resuscitation (CPR) cohort 26,040
Participants
29,345 patients
Comparison
R-EDByUS score predicting unfavorable neurological outcome at 1 month
  • prehospital ROSC cohortn = 3,305
  • ongoing CPR cohortn = 26,040

Performance

As reported in the abstract

Discrimination (areas under the curve) · 1 month

areas under the curve

0.906 and 0.913

Further findings

Unfavorable outcomes among patients with a predicted probability ≥99%

Discrimination by in-hospital intervention subgroup (ongoing CPR cohort)

Discrimination was lower among patients who received PCI, TTM, or ECMO in the ongoing CPR cohort

Original publication

Prehospital Prognostication after Out-of-Hospital Cardiac Arrest in Tertiary Care Centers: The R-EDByUS Score in the JAAM-OHCA Registry. Resuscitation. Published 6 October 2026. doi:10.1016/j.resuscitation.2026.111341

Summarised from the published abstract; every number is checked against it