Association between left atrial size and atrial fibrillation recurrence after single circumferential pulmonary vein isolation: a systematic review and meta-analysis of observational studies.

Left atrial (LA) enlargement is associated with atrial fibrillation (AF). However, it is controversial whether dilated atrium can predict post-ablation AF recurrence. We undertook a systematic review and meta-analysis to analyse the association between LA diameter and AF recurrence after single circumferential pulmonary vein isolation (CPVI) and explore the potential mechanism.