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 .
Obstructive sleep apnoea risk profile and the risk of recurrence of atrial fibrillation after catheter ablation.
AIMS The aim of this study was to identify the impact of obstructive sleep apnoea ( OSA ) on recurrence after catheter ablation of paroxysmal atrial fibrillation ( AF ) . METHODS AND RESULTS One hundred and seventy-eight consecutive patients with paroxysmal AF who underwent index circumferential pulmonary vein ( PV ) isolation were prospect ively enrolled . The patients were divided into high risk ( HR group ) and low risk ( LR group ) for OSA group with Berlin question naire . Of the 178 patients , 104 ( 58.4 % ) were in the HR group and 74 ( 41.6 % ) were in the LR group . After a mean follow-up of 344 + /- 137 ( 91 - 572 ) days , 44 patients ( 24.7 % ) experienced recurrence , and the recurrence rate did not differ between the HR ( 25.0 % ) and LR groups ( 24.3 % , P = 0.855 ) . Cox analysis revealed that PV isolation was the only independent predictor of recurrence ( hazard ratio 5.11 , 95 % confidence interval 1.42 - 18.47 , P = 0.013 ) . There was no significant difference in the incidence of complications between the HR and LR groups ( 2.9 vs. 1.9 % , P = 0.729 ) . CONCLUSION The recurrence rate and incidence of complications did not differ in patients with different risk profiles for OSA . The presence of OSA should not lower the decision threshold to choose an ablative procedure in paroxysmal 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 .