Association between Atrial Fibrillation and Aortic Aneurysms: A Population-Based Cohort Study

Area of Science:

• Cardiology
• Vascular Medicine
• Epidemiology

Background:

• Atrial fibrillation (AF) is the most prevalent sustained arrhythmia.
• Molecular pathways in AF pathogenesis are implicated in aortic aneurysm (AA) development.
• Understanding the relationship between AF and AA is crucial for patient management.

Purpose of the Study:

• To investigate the association between atrial fibrillation and aortic aneurysm.
• To determine if AF increases the risk of AA.
• To assess if AA increases the risk of AF.

Main Methods:

• Nationwide population-based retrospective cohort study using Taiwan's National Health Insurance Research Database.
• Inclusion of 116,225 AF cases and matched controls, and 19,776 AA cases and matched controls.
• Cox regression analysis to estimate adjusted hazard ratios and 95% confidence intervals for associations, controlling for comorbidities.

Main Results:

• Patients with AF showed a significantly increased risk of developing AA (adjusted HR 1.243, p < 0.001).
• Patients with AA also had an increased risk of developing AF (adjusted HR 1.187, p < 0.001).
• Heart failure (HF) was identified as a common risk factor for both AA and AF.

Conclusions:

• Significant associations exist between atrial fibrillation and aortic aneurysm.
• Heart failure is a shared risk factor contributing to the development of both AF and AA.
• These findings suggest a common pathophysiological link between AF and AA.