The midterm results of radiofrequency ablation and vagal denervation in the surgical treatment of long-standing atrial fibrillation associated with rheumatic heart disease

The Thoracic and Cardiovascular Surgeon
Zongtao YinHongguang Han

Abstract

Though maze III procedure is an effective surgical treatment for atrial fibrillation (AF), the complexity and complications prevent its widespread application. Radiofrequency ablation (RA) has become an accepted therapy, but its chronic effects are still unclear. This retrospective clinical study describes our experience of RA and vagal denervation (VD) in surgical treatment of long-standing AF associated with rheumatic heart disease (RHD) during a 5-year follow-up. Between June 2006 and December 2007, a total of 173 consecutive patients with long-standing AF-associated RHD underwent mitral valve replacement and ablation maze procedure. In total, 92 cases had RA alone and 81 had RA + VD. Patients were followed up with clinical examination and electrocardiography, and the data were analyzed by multivariable analysis with Cox hazard model. The average follow-up time was 5.0 ± 0.6 years. Multivariable analysis with Cox hazard model revealed that the duration of AF, the size of the left atrium, and tricuspid regurgitation are risk factors for AF recurrence. In addition, long-standing AF ≥ 7 years, left atrium diameter ≥ 58 mm, and severe tricuspid regurgitation may increase the risk of AF recurrence by 2.16-, 2.37-, and 2.67-fold, ...Continue Reading

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