Publication: Predictors of sinus rhythm after radiofrequency maze and mitral valve surgery
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Issued Date
2008-01-01
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ISSN
02184923
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2-s2.0-52649156122
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Mahidol University
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SCOPUS
Bibliographic Citation
Asian Cardiovascular and Thoracic Annals. Vol.16, No.4 (2008), 292-297
Suggested Citation
Suchart Chaiyaroj, Tachapong Ngarmukos, Panuwat Lertsithichai Predictors of sinus rhythm after radiofrequency maze and mitral valve surgery. Asian Cardiovascular and Thoracic Annals. Vol.16, No.4 (2008), 292-297. doi:10.1177/021849230801600407 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/19798
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Title
Predictors of sinus rhythm after radiofrequency maze and mitral valve surgery
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Abstract
The prevalence and predictors of postoperative sinus rhythm in patients undergoing a radiofrequency ablation maze operation and mitral valve surgery were assessed in 63 patients of whom 54 (86%) were in permanent atrial fibrillation. Operative mortality was 3.17%. At a median follow-up of 18 months, 54 (88.5%) patients were in sinus rhythm and 7 (11.5%) were in atrial fibrillation. The probability of sinus rhythm at 30 months was 92%. Left atrial diameter was the most significant prognostic factor for sinus rhythm on multivariate proportional-hazard regression analysis. The cutoff value of preoperative left atrial diameter for predicting persistent atrial fibrillation at 6 months was 6 cm (100% sensitivity and 73.6% specificity). The radiofrequency ablation maze operation can be performed in addition to mitral surgery with a high rate of successful conversion to sinus rhythm. Preoperative left atrial diameter < 6 cm is an important prognostic factor for sinus rhythm conversion.