Study on Left Atrial Dimension and Function After Modified Endoscopic Procedure for XXXX at Two Years' Follow-Up.

@entity1 @entity955
BACKGROUND: Modified endoscopic procedures for @entity955 ( @entity955 ) have a greater success rate because of the increased number of linear lesions. Concerns have been raised about the impact of ablation scars on the left atrium. This study aimed to examine the impact of ablation on left atrial dimension and systolic function after modified endoscopic procedures with echocardiographic measurement. METHODS: Of 107 @entity1 undergoing modified endoscopic ablation, 58 had paroxysmal @entity955 and 49 had persistent or long-standing @entity955 . The procedure was performed on the beating heart through three ports on the left chest wall. Three circular and two linear lesions were made on the left atrium. The left atrial appendage was excised by stapler. Echocardiography was performed preoperatively and at the 2-year follow-up. RESULTS: Most @entity1 (86.9%) @entity1 were in sinus rhythm (SR) postoperatively. Fourteen @entity1 (5 with paroxysmal @entity955 and 9 with persistent/long-standing @entity955 ) failed to maintain SR. Echocardiographic data indicated that the left atrial diameter decreased only in the @entity1 with postoperative SR but continued to increase in @entity1 with fail SR maintenance. Left atrial function was also improved after the procedure, especially in @entity1 with preoperative nonparoxysmal @entity955 or with postoperative SR maintenance. Furthermore, left atrial function in @entity1 who failed to restore SR was not worsened even with left @entity955 . CONCLUSIONS: Modified endoscopic procedure for @entity955 improved post-procedural left atrial function of @entity1 with SR maintenance. The left atrial function of @entity1 with failed SR maintenance was also not worsened after left @entity955 .
