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Effect of Left Atrial Volume Reduction with Maze Operation on Sinus Conversion and Recovery of Left Atrial Transport Function  

Hong Seong-Beom (Department of Thoracic and Cardiovascular Surgery, Chonnam National University Medicial School)
Ryu Sang-Wan (Department of Thoracic and Cardiovascular Surgery, Chonnam National University Medicial School)
Jung Eun-Kyung (Department of Preventive Medicine, Chonnam National University Medical School)
Jung In-Suk (Department of Thoracic and Cardiovascular Surgery, Chonnam National University Medicial School)
Bum Min-Sun (Department of Thoracic and Cardiovascular Surgery, Chonnam National University Medicial School)
Park Jung-Min (Department of Thoracic and Cardiovascular Surgery, Chonnam National University Medicial School)
Lee Kyo-Sun (Department of Thoracic and Cardiovascular Surgery, Chonnam National University Medicial School)
Kim Sang-Hyung (Department of Thoracic and Cardiovascular Surgery, Chonnam National University Medicial School)
Ahn Byung-Hee (Department of Thoracic and Cardiovascular Surgery, Chonnam National University Medicial School)
Publication Information
Journal of Chest Surgery / v.38, no.11, 2005 , pp. 739-745 More about this Journal
Abstract
Background: The Maze procedure considered the most effective method of treatment for atrial fibrillation. However, the sinus conversion rates decreased due to several factors, especially enlarged left atrium. The purpose of this study was to investigate the effects of Maze procedure with aen atrial volume reduction plasty on rheumatic mitral valve disease, Material and Method: From December of 200f to July of 2004, 45 patients received mitral valve and Maze operation. The patients were placed in either group f or group 2, based on the left atrial volume reduction plasty. The presence and onset of sinus rhythm and the incidence of trans mitral A waves were monitored during the postoperative 7 days and throughout the follow up period of 3 and 6 months. Mean follow up periods were 15.8 10.1 months in group 1 and $6.1\pm2.7$ months in group 2. Result: The sinus onset were $9.88\pm12.2$ days in group 1, and $1\pm3.6$ days in group 2 (p<0.01). The sinus conversion rates in the group 1 and 2 were $65\%,\;75\%$ (p=0.07) in the postoperative 7 days, $70.5\%,\;100\%$ (p<0.01) at postoperative 3 months, and $93\%,\;100\%$ (p<0.01) at postoperative 6 months, respectively. The wave detection rates in the postoperative 7days were $31.2\%\;and\;63.6\%$, and continued to improve over time to $83.3\%\;and\;100\%$ by 6months, respectively. Conclusion: The results suggest that Maze procedure with left atrial volume reduction plasty is effective for inducing sinus rhythm and for restoring left atrial contractile function after concomitant rheumatic mitral valve surgery. However further follow up of this patients for long time is necessary.
Keywords
Atrial fibrillation; Arrhythmia surgery; Heart atrium;
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