Objective      To evaluate the related factors influencing the curative effects of CARTO-guided catheter ablation on atrial fibrillation/atrial flutter (AF/AFL) and to provide evidences for the selection of patients.       Methods      A retrospective analysis was carried out in 100 cases that were divided into 2 groups according to maintenance of sinus rhythm

effective group (group A) and AF/AFL recurrence group (group B)

after 6 months of follow-up. T

he clinical data of the  2 groups were analyzed.       Results      All patients showed sinus arrhythmia just after the catheter ablation. After 6 months of follow-up

there were 71 cases of sinus arrhythmia and 29 cases of AF/AFL recurrence. Persistent AF

increased hs-CRP level

increased NT-proBNP level

enlarged LAVImax and moderate and severe degree of mitral regurgitation were significantly associated with AF/AFL recurrence (

P

0.05). Furthermore

increased hs-CRP level (HR:5.12；95%CI: 1.87-14.06

P

=0.002) and moderate and severe degree of mitral regurgitation were independent predictors of AF/AFL recurrence.       Conclusion      Catheter ablation is an effective treatment of AF/AFL in guidance of CARTO. Considering baseline hs-CRP and mitral regurgitation before catheter ablation will improve the success rate.