Key result
ABC pathway adherence linked to ~53% lower risk of death and major cardiovascular events.
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Why the study?
Early-onset atrial fibrillation patients exhibit heterogeneous comorbidity profiles that have long been overlooked, necessitating identification of phenotype clusters and evaluation of ABC pathway effectiveness.
Does Atrial fibrillation Better Care (ABC) pathway adherence reduce the composite of all-cause death and major adverse cardiovascular events in early-onset atrial fibrillation patients?
Cohort (n=3,573)
Does Atrial fibrillation Better Care (ABC) pathway adherence reduce the composite of all-cause death and major adverse cardiovascular events in early-onset atrial fibrillation patients?
Hazard Ratio: 0.47 (95% CI 0.4–0.56)
p-value: p=<0.001
Adherence to the ABC (Atrial fibrillation Better Care) pathway significantly improves clinical outcomes in young patients with early-onset atrial fibrillation, regardless of their specific comorbidity burden.
BACKGROUND Early-onset atrial fibrillation (AF) patients exhibit heterogeneous comorbidity profiles, but they have long been overlooked. OBJECTIVE To identify comorbidity phenotype clusters in younger AF patients and evaluate prognosis and effectiveness of holistic or integrated care management based on the Atrial fibrillation Better Care (ABC) pathway among different phenotypes. METHODS In this study from the Tianjin Atrial Fibrillation Project, latent class analysis was conducted to determine comorbidity phenotypes in AF patients aged 18-45 years. We investigated the associations between the comorbidity phenotypes, AF management strategies and prognosis. The primary outcome was the composite of all-cause death and major adverse cardiovascular events. RESULTS We included 3573 early-onset AF patients (mean age 38.68 ± 5.82 years; 781 [21.9%] female). Three phenotype clusters were identified: (1) Cluster 1: Low Complexity (n=1897, 53.1%); (2) Cluster 2: Multiple Cardiovascular Metabolic Comorbidities (n=1037, 29.0%); (3) Cluster 3: Structural Heart Disease (n=639, 17.9%). During a median follow-up of 1408 days (IQR 496-2532), the risk of the primary outcome was higher in Cluster 2 (HR: 1.94, 95% confidence interval (Cl): 1.56-2.42, P<0.001) and Cluster 3 (HR: 2.63, 95%Cl: 2.15-3.20, P<0.001), compared to Cluster 1. ABC pathway adherence (n=1186 [33.2%] patients) was associated with reduced risk of the primary outcome overall (HR: 0.47, 95%Cl: 0.40-0.56, P<0.001), with similar benefits across different comorbidity phenotypes (Pint = 0.097). CONCLUSION Three heterogeneous comorbidity-based phenotype clusters were identified in early-onset AF patients, associated with different treatment and prognosis. Full ABC pathway adherence improved prognosis in younger AF patients, regardless of their comorbidity phenotypes.
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Ding et al. (2026) conducted a cohort in Early-onset atrial fibrillation (n=3,573). Atrial fibrillation Better Care (ABC) pathway adherence vs. Non-adherence was evaluated on Composite of all-cause death and major adverse cardiovascular events (HR 0.47, 95% CI 0.40-0.56, p=<0.001). Full adherence to the Atrial fibrillation Better Care pathway was associated with a reduced risk of all-cause death and major adverse cardiovascular events (HR 0.47; 95% CI 0.40-0.56; P<0.001).
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