Arrhythmias & electrophysiology

Clinical complexity in patients with atrial fibrillation: exploring differential risk profiles from European and Asian cohorts

EuropacePublished Post hoc analysis of the EORP-AF and APHRS-AF registries

Primary result · Composite of all-cause death and MACEResult — go to the resultHazard ratio 1.55 95% CI 1.35–1.77

Authors' conclusion

Among AF patients with CC, those enrolled in Asia exhibited marked differences in clinical profiles, management strategies, and outcomes, suggesting greater vulnerability to CC in the Asian population.

Study context

Population
Patients with atrial fibrillation (AF) in European (EORP-AF) and Asian (APHRS-AF) registries2,794 (19.9%) met clinical complexity (CC) criteria
Participants
14,055 patients
Comparison
Clinical complexity vs no CC in AF
  • CCn = 2,794
Primary endpoint
Composite of:
  • All-cause death
  • Major adverse cardiovascular events (MACE) (CV death, ACS, thromboembolic events)

Primary result

Composite of:

  • All-cause death
  • MACE

Hazard ratio

1.55

95% CI 1.35–1.77

CCvs No CC
HR 1.55 (95% CI 1.35–1.77)

As reported in the abstract

Secondary outcomes

OutcomeEstimate
All-cause deathHR 1.65 (95% CI 1.42–1.93)
MACEHR 1.50 (95% CI 1.26–1.80)
CV deathHR 1.81 (95% CI 1.40–2.36)
OAC use and rhythm control in patients with CC, Asian vs EuropeanAsianvs EuropeanOAC useOR 0.75 (95% CI 0.57–1.01)
OAC use and rhythm control in patients with CC, Asian vs EuropeanAsianvs EuropeanRhythm controlOR 0.53 (95% CI 0.41–0.69)

Composite outcome, by region (subgroup)

Excess risk of composite outcome in Asians
HR 2.28 (1.57-3.32) (95% CI)
Excess risk of composite outcome in Europeans
HR 1.51 (1.31-1.75) (95% CI)
  • P-interaction = 0.036

Safety

OutcomeHR (95% CI)
Major bleeding2.02 (1.47–2.77)

Original publication

Clinical complexity in patients with atrial fibrillation: exploring differential risk profiles from European and Asian cohorts. Europace. Published 19 September 2025. doi:10.1093/europace/euaf229

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