Clinical Report: Atrial Volume Measurements and Their Impact on AF Recurrence
Overview
This study investigates the association between various atrial volumetrics and the recurrence of atrial fibrillation (AF) within 12 months following catheter ablation. Key findings indicate that left atrial appendage volume and right atrial body volume are associated with AF recurrence post-ablation.
Background
Atrial fibrillation (AF) is the most prevalent cardiac arrhythmia, significantly increasing the risk of mortality and morbidity. Despite advancements in catheter ablation techniques, recurrence rates remain high, necessitating further exploration of predictive factors.
Data Highlights
Atrial Volume Metric
Optimal Cutoff (mL)
Adjusted Hazard Ratio (aHR)
P-value
Total LA
≥129.1
LA Body
≥112.0
LAA
≥15.3
1.97
0.038
Total RA
≥123.0
RA Body
≥82.1
2.39
0.042
RAA
≥13.2
Key Findings
Among 199 patients, 22.6% experienced AF recurrence within 12 months post-ablation.
All atrial volumetrics were significantly higher in the recurrence group compared to the non-recurrence group.
LAA volume ≥15.3 mL was associated with an aHR of 1.97 for recurrence.
RA body volume ≥82.1 mL was associated with an aHR of 2.39 for recurrence.
Most atrial volumetrics were significantly associated with 12-month AA recurrence after AFCA.
Clinical Implications
The findings indicate that measuring specific atrial volumes, particularly LAA and RA body volumes, may help identify patients at higher risk for AF recurrence post-ablation.
Conclusion
The study highlights the association of various atrial volumetrics with AF recurrence after catheter ablation, with specific volumes linked to recurrence.
