Atrial fibrillation, Cardiac magnetic resonance, Recurrence, catheter ablation, Diseases of the circulatory (Cardiovascular) system, RC666-701

Background: This systematic review and meta-analysis aimed to assess changes in left atrial structure and function at baseline and after catheter ablation and their association with atrial fibrillation recurrence using cardiac magnetic resonance imaging (MRI). Methods: As of June 2024, a total of 3086 articles have been obtained through searching PubMed, Embase, and Cochrane databases. Standard mean differences and 95% confidence intervals were used to examine structural and functional changes of left atrium after catheter ablation and their relationship with recurrence of atrial fibrillation. Results: A total of 13 prospective cohort studies were included in the analysis. Decreased left atrial emptying capacity is seen in the short term after catheter ablation, and structural changes in the left atrium are seen in the long term (EFActive: SMD, 1.23, 95 % CI, 1.10–2.36, p