Serial monitoring of reverse left-atrial remodeling after pulmonary vein isolation in patients with atrial fibrillation: A magnetic resonance imaging study
Serial monitoring of reverse left-atrial remodeling after pulmonary vein isolation in patients with atrial fibrillation: A magnetic resonance imaging study
复制标题
DOI：
10.1016/j.ijcard.2010.08.034
复制
发表时间：
2011-11-17
影响因子：
3.5
通讯作者：
Kriatselis, Charalampos
中科院分区：
文献类型：
--
作者：
Jahnke, Cosima;Fischer, Julia;Kriatselis, Charalampos
Purpose: To prospectively determine the impact of sinus rhythm restoration on left-atrial (LA) volumes and function assessed by cardiac magnetic resonance (CMR) imaging within the first year after pulmonary vein isolation (PVI).Methods: Forty-one patients (28 men; age: 57 +/- 10 years) with paroxysmal or non-paroxysmal atrial fibrillation were studied serially using CMR at baseline and at 1-, 3-, 6- and 12-month intervals following PVI. LA diastolic and systolic volumes were determined by cine imaging with full gapless LA coverage applying Simpson's rule. Successful PVI was defined by a persisting sinus rhythm during the 12-month follow-up after a 3-month blanking period; patients with a relapse of atrial fibrillation after the blanking period were censored (4 patients at 6-month follow-up and additional 6 patients at 12-month follow-up).Results: In all patients, LA diastolic and systolic volumes decreased significantly and progressively during the 12-month follow-up (p < 0.001 and p = 0.001, respectively). At baseline patients with successful PVI demonstrated a significantly smaller LA diastolic volume compared to patients with relapsed atrial fibrillation (p = 0.009). During the 3-month blanking period, patients with successful PVI showed a significant decrease of LA diastolic and systolic volumes (p = 0.026 and p = 0.006, respectively) and a significant increase of LA ejection fraction (p = 0.028); patients with subsequent relapse of atrial fibrillation, however, exhibited no significant change of LA diastolic and systolic volumes or LA ejection fraction.Conclusion: Restoration of sinus rhythm led to a significant and progressive decrease of left-atrial diastolic and systolic volumes during one year following pulmonary vein isolation. (C) 2010 Elsevier Ireland Ltd. All rights reserved.
