Atrial Fibrillation in Patients with Very High Risk for Stroke and Adverse Events-Insights from the Observational...

Area of Science:

• Cardiology
• Neurology
• Epidemiology

Background:

• Atrial fibrillation (AF) is a primary cause of stroke, posing significant challenges for individual risk prediction.
• Current risk scores like CHA₂DS₂-VASc may not capture all factors differentiating AF patients with and without cerebrovascular events (CVE).

Purpose of the Study:

• To identify differences between AF patients with and without CVE.
• To analyze AF characteristics, treatment, vascular risk factors, comorbidities, prognosis, and outcomes in relation to CVE history.

Main Methods:

• Analysis of the Atrial Fibrillation Rhine-Neckar Region (ARENA) Project observational cohort.
• Division of 2061 AF patients into CVE (n=292) and non-CVE groups.
• 1-year follow-up via phone calls.

Main Results:

• CVE patients were older (74.6 vs 71.7 years) with higher CHA₂DS₂-VASc scores (5.3 vs 3.3).
• Larger left atrial diameter was observed in patients with CVE (47/46 mm vs 44 mm).
• 1-year mortality was significantly higher in the CVE group (p < 0.001), with increased stroke incidence in survivors (2.9% vs 0%).

Conclusions:

• AF patients with a history of CVE exhibit a significantly worse prognosis.
• Atrial structural remodeling, cardiovascular disease, and other factors contribute to poorer outcomes.
• Echocardiography for atrial remodeling assessment may enhance risk stratification beyond existing scores.