Abstract
Older adults with atrial fibrillation (AF) have highly diverse risk levels for mortality, heart failure (HF), thromboembolism (TE), and major bleeding (MB), thus an integrated risk-pattern algorithm is warranted. We analyzed 573 AF patients aged≥75years from our single-center cohort (Shinken Database 2010-2018). The 3-year risk scores (risk probability) for mortality (M-score), HF (HF-score), TE (TE-score), and MB (MB-score) were estimated for each patient by logistic regression analysis. Using the four risk scores, cluster analysis was performed with Ward's linkage hierarchical algorithm. Three clusters were identified: Clusters 1 (n=429, 74%), 2 (n=24, 5%), and 3 (n=120, 21%). The clusters were characterized as standard risk (Cluster 1), high TE- and MB-risk (Cluster 2), and high M- and HF-risk (Cluster 3). Oral anticoagulants were prescribed for over 80% of the patients in each cluster. Catheter ablation for AF was performed only in Cluster 1 (8.9%). Compared with Cluster 1, Cluster 2 was more closely associated with males, asymptomatic AF, history of cerebral infarction or transient ischemic attack, history of intracranial hemorrhage, high HAS-BLED score (≥3), and low body mass index (<18.0kg/m2). Cluster 3 was more closely associated with old age, heart failure, and low estimated creatinine clearance (<30mL/min). The cluster analysis identified those at a high risk for all-cause death and HF or a high risk for TE and MB and could support decision making in older adults with AF.
Highlights
Atrial fibrillation (AF) is one of the most common arrhythmias associated with increased mortality and morbidities such as thrombo embolism (TE) and heart failure (HF)
The benefit of catheter ablation to prevent HF in atrial fibrillation (AF) pa tients tends to decrease in older adults [5]
Cluster 1 accounted for 75% of the patients, who were characterized as having standard risk scores; Cluster 2 accounted for 4%, who were characterized as having high TE- and major bleeding (MB)-scores; and Cluster 3 accounted for 21%, who were characterized as having high M- and HF-scores
Summary
Atrial fibrillation (AF) is one of the most common arrhythmias associated with increased mortality and morbidities such as thrombo embolism (TE) and heart failure (HF). The benefit of catheter ablation to prevent HF in AF pa tients tends to decrease in older adults [5]. Older adults with atrial fibrillation (AF) have highly diverse risk levels for mortality, heart failure (HF), thromboembolism (TE), and major bleeding (MB), an integrated risk-pattern algorithm is warranted. The 3-year risk scores (risk probability) for mortality (M-score), HF (HF-score), TE (TE-score), and MB (MB-score) were estimated for each patient by logistic regression analysis. Cluster 3 was more closely associated with old age, heart failure, and low estimated creatinine clearance (
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