1. Left atrial strain predicts paroxysmal atrial fibrillation recurrence after catheter ablation: a 1-year study using three-dimensional speckle-tracking echocardiography
- Author
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Rui Zhang, He Li, Yan Wang, Tianle Yu, Jiacheng Li, Yumeng Wu, Zhiwen Yu, Cuixing Liang, Dan Yu, and Li Xue
- Subjects
Three-dimensional speckle tracking echocardiography (3DSTE) ,Paroxysmal atrial fibrillation ,Radiofrequency catheter ablation (RFCA) ,Strain ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Abstract Background Radiofrequency catheter ablation (RFCA) is a widely employed method for restoring sinus rhythm(SR) in patients with drug-refractory paroxysmal atrial fibrillation (PAF). Three-dimensional speckle tracking echocardiography (3DSTE) is a precise and practical imaging technique for clinically assessing myocardial function in the left atrium. The objective of this study was to assess alterations in three-dimensional strains and predict recurrence in patients with PAF following RFCA. Methods A total of 109 patients diagnosed with drug-refractory PAF and scheduled for RFCA were included in this study between September 2019 and June 2022. Conventional echocardiography and 3DSTE were performed prior to and one year(median period of 12.2 months) after RFCA. Global three-dimensional left atrial (LA) strain parameters, along with those of the left ventricle, were measured and analyzed statistically. The primary study endpoint was the recurrence of atrial fibrillation (AF). Results Among the 109 patients, 78 maintained a stable SR during the one-year follow-up after RFCA, while 31 experienced a recurrence of AF. Notably, patients who sustained SR demonstrated significant improvements in various LA strain parameters, including reservoir, pump, and conduit functions, compared to both their preoperative levels and those of patients who experienced recurrence(p
- Published
- 2025
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