Arrhythmias & electrophysiology

Mortality, Hospitalization, and Cardiac Interventions in Patients With Atrial Fibrillation Aged <65 Years

Circ Arrhythm ElectrophysiolPublished Retrospective cohort study

Authors' conclusion

Patients with AF aged <65 years have significant comorbidity burden and considerable long-term mortality. They are also at a significantly increased risk of hospitalization for heart failure, stroke, and myocardial infarction.

Study context

Population
Adults with Atrial Fibrillation (AF) evaluated at University of Pittsburgh Medical Center, January 2010–December 201967,221 with AF
Participants
17,335 vs 918,073
Exposure
AF aged <65 years vs contemporary cohort without AF
  • AF <65 yearsn = 17,335
  • No AFn = 918,073reference
Outcome
All-cause mortality
Follow-up
Mean >5 years
Methodological detailssingle health system (University of Pittsburgh Medical Center), electronic health records and administrative data
  • Single health system (University of Pittsburgh Medical Center)
  • Electronic health records and administrative data

Main finding

As reported in the abstract

All-cause mortality, AF <65 years vs comorbidity-adjusted no AF
AF <65 years vs No AFHazard ratio (95% CI)
Men aged <50 years
1.5(1.24–1.79)
Men aged 50-65 years
1.3(1.26–1.43)
Women aged <50 years
2.4(1.82–3.16)
Women aged 50-65 years
1.7(1.6–1.92)
Deaths among AF <65 years
2084
Mortality, <50 years
6.7%
Mortality, 50-65 years
13%

Observational data: associations, not effects.

Further findings

>1 hospitalization for MI, HF and stroke, by age

MI, <50 years
1.3%
HF, <50 years
4.8%
Stroke, <50 years
1.1%
MI, 50-65 years
2.2%
HF, 50-65 years
7.4%
Stroke, 50-65 years
1.1%

Risk factors for mortality in younger patients with AF

HF, age-related interaction
P = 0.007
Hypertension, age-related interaction
P = 0.013
Multiple cardiac and noncardiac risk factor (RFs) associated with increased mortality

Original publication

Mortality, Hospitalization, and Cardiac Interventions in Patients With Atrial Fibrillation Aged <65 Years. Circ Arrhythm Electrophysiol. Published 22 April 2024. doi:10.1161/circep.123.012143

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