Left atrial strain predicts reverse remodeling after catheter ablation for XXXX .

@entity1 @entity955
OBJECTIVES: The purpose of this study was to assess left atrial (LA) strain during long-term follow-up after catheter ablation for @entity955 and to find predictors for LA reverse remodeling. BACKGROUND: The association between LA reverse remodeling and improvement in LA strain after catheter ablation has not been investigated thus far. METHODS: In 148 @entity1 undergoing catheter ablation for @entity955 , LA volumes and LA strain were assessed with echocardiography at baseline and after a mean of 13.2    6.7 months of follow-up. The study population was divided according to LA reverse remodeling at follow-up: responders were defined as @entity1 who exhibited 15% or more reduction in maximum LA volume at long-term follow-up. Left atrial systolic (LAs) strain was assessed with tissue Doppler imaging. RESULTS: At follow-up, 93 @entity1 (63%) were classified as responders, whereas 55 @entity1 (37%) were nonresponders. At baseline, LAs strain was significantly higher in the responders as compared with the nonresponders (19    8% vs. 14    6%; p = 0.001). Among the responders, a significant increase in LAs strain was noted from baseline to follow-up (from 19    8% to 22    9%; p < 0.05), whereas no change was noted among the nonresponders. LAs strain at baseline was an independent predictor of LA reverse remodeling (odds ratio: 1.813; 95% confidence interval: 1.102 to 2.982; p = 0.019). CONCLUSIONS: In the present study, 63% of the @entity1 exhibited LA reverse remodeling after catheter ablation for @entity955 , with a concomitant improvement in LA strain. LA strain at baseline was an independent predictor of LA reverse remodeling.
