Echocardiographic Risk Factors for Atrial Fibrillation Recurrence Following Radiofrequency Catheter Ablation: A...

Area of Science:

• Cardiology
• Medical Imaging
• Electrophysiology

Background:

• Atrial fibrillation (AF) recurrence after radiofrequency catheter ablation (RFCA) remains a clinical challenge.
• Pre-procedural echocardiography (ECHO) parameters may offer insights into predicting ablation outcomes.
• Identifying reliable predictors can optimize patient selection and post-procedural management.

Purpose of the Study:

• To evaluate the predictive value of pre-procedural ECHO parameters for AF recurrence post-RFCA.
• To develop and validate a predictive model for AF recurrence using key echocardiographic indices.
• To identify independent predictors of AF recurrence following RFCA.

Main Methods:

• Retrospective analysis of 103 AF patients undergoing first-time RFCA.
• Assessment of pre-ablation ECHO parameters, including left atrial diameter (LAD), left atrial volume index (LAVI), and mitral inflow/annular velocities (E/A, E/e').
• Statistical analysis using univariate and multivariate logistic regression, ROC curves, and decision curve analysis (DCA) to develop a predictive model and nomogram.

Main Results:

• AF recurrence was observed in 31.1% of patients.
• Higher LAVI and E/e' ratio, along with lower average early diastolic mitral annular tissue velocity (e'), were associated with recurrence in univariate analysis.
• Multivariate analysis identified LAVI (OR=1.154) and E/e' ratio (OR=2.545) as independent predictors. The combined model achieved an AUC of 0.809.

Conclusions:

• Pre-procedural LAVI and E/e' ratio are significant independent predictors of AF recurrence after RFCA.
• A combined predictive model incorporating LAVI and E/e' demonstrates promising performance for predicting AF recurrence.
• Further external validation is recommended before widespread clinical implementation of the predictive model.