Dilated LA significantly increases the risk of AF recurrence after  single CPVI .
This is especially applicable to the patients with long-term follow-up
AIMS 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 .
Predictive value of early recurrence and delayed cure after catheter ablation for patients with chronic atrial fibrillation.
BACKGROUND Radiofrequency catheter ablation ( RFCA ) for curing atrial fibrillation ( AF ) is often followed by early recurrence and delayed cure , so the present study investigate the predictive factors this in patients with chronic AF . METHODS AND RESULTS Ninety-two consecutive patients ( 70 males ; mean age , 58.7+/-6.4 years ) with chronic AF who underwent RFCA for treatment of symptomatic AF were enrolled .  Early recurrence of AF ( ERAF ) occurred in 45 patients after ablation . Not achieving AF termination could predict ERAF ( odds ratio ( OR ) 0.95 ; 95 % confidence interval ( CI ) 0.84 - 1.13 ; p=0.02 ) in multivariate analysis . During a follow-up of 12+/-11 ( range , 5 - 25 ) months , delayed cure occurred in 35.6 % ( 16/45 ) of the patients with ERAF . Left atrial size and AF termination during ablation were related to delayed cure . AF termination was the only independent predictive factor for delayed cure ( OR 1.47 ; 95 % CI 1.05 - 1.87 ; p=0.02 ) . CONCLUSION Not achieving AF termination is the only independent predictor of ERAF . Among patients with ERAF , those with a smaller left atrium and AF termination have a higher probability of delayed cure . AF termination can independently predict delayed cure . These results emphasize the importance of AF termination during ablation for patients with chronic AF
Dilated LA significantly increases the risk of AF recurrence after  single CPVI .
This is especially applicable to the patients with long-term follow-up
AIMS 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 .