ArticleKorean circulation journal2023
Is It Safe to Preserve Left Atrial Appendage During Maze Procedure?
Article in Korean circulation journal, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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7 citing papers in PubMed, 12 citations in OpenAlex.
- Pacemaker implantation after concomitant maze procedure and mitral valve repair in atrial functional mitral regurgitation.Journal of thoracic disease · 2026Article
- The Impact of Mitral Valvular Etiology on Left Atrial Functional Recovery After the Maze Procedure: A Comparison Between Mitral Stenosis, Mitral Regurgitation and Non-Mitral Valve Disease.Journal of clinical medicine · 2026Article
- Atrial Functional Mitral Regurgitation Is a Risk Factor for Permanent Pacemaker Implantation.Journal of clinical medicine · 2025Article
- Left Atrial Appendage Characteristics Assessed with Cardiac Computed Tomography in Patients with Atrial Fibrillation and Severe Mitral Valve Disease.Yonsei medical journal · 2025Article
- Clinical impacts of concomitant left atrial appendage occlusion during mitral valve surgery in patients with mitral regurgitation.Scientific reports · 2024Article
- Outcomes of maze procedure and mitral valve surgery in atrial functional mitral regurgitation: a retrospective study.Journal of cardiothoracic surgery · 2024Article
- The Empire Strikes Back?Korean circulation journal · 2023Article
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
BACKGROUND AND
objectivesThe left atrial appendage (LAA) can contribute significantly to LA mechanical contraction. Nevertheless, the preventive effect of LAA occlusion during the maze procedure against cerebral infarction remains controversial. In this study, we compared the surgical, cardiac hemodynamic, and neurologic outcomes between LAA preservation and occlusion performed during the maze procedure.
methodsBetween January 2015 and August 2021, 252 patients underwent the maze procedure using cryoablation at our medical center. After excluding patients according to our exclusion criteria (i.e., mechanical prosthesis implantation, preexisting LAA thrombus), LAA was preserved in 113 patients (non-occlusion group) and occluded in 75 patients (occlusion group). Outcomes were compared using propensity score matching (PSM).
resultsPSM did not reveal significant intergroup differences in baseline characteristics between the non-occlusion (n=53) and occlusion (n=53) groups. During a median follow-up of 44 months, 2 patients in the non-occlusion group (3.8%) experienced ischemic strokes. There was no significant difference in the rate of freedom from stroke (p=0.19) and major adverse cardiac events (p=0.43) between the 2 groups. Through echocardiography at 1-year follow-up, a statistically significant difference in LA mechanical contraction was observed between the non-occlusion group and occlusion group (24 of 33 [72.7%] vs. 18 of 37 [48.6%], respectively; p=0.04).
conclusionsIn this study, preservation of the LAA during the maze procedure resulted in better LA function than LAA occlusion, with similar rates of stroke.
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