Back to 2014 Annual Meeting Posters
Left Atrial Radiofrequency Ablation During Mitral Valve Surgery Improve Functional Capacity and The Clinical Outcome
Alessandro D'Alfonso1, Jacopo Alfonsi1, Filippo Capestro1, Carlo Zingaro1, Giovanna Patteri2, Romualdo Belardinbelli2, Lucia Torracca1.
1Cardiac Surgery Unit, Ancona, Italy, 2Cardiac Unit, Ancona, Italy.
OBJECTIVE: Aims of this study were to report sinus rhythm restoration and to determinate functional capacity and clinical outcome at follow-up after concomitant left atrial radiofrequency ablation (RFA) during mitral valve surgery.
METHODS: Between December 2008 and December 2011, 83 patients with AF underwent mitral valve surgery at our institution. Forty-five (54%) patients (Group A) received concomitant left atrium RFA and 38 (46%) patients did not (Group NA). All patients were evaluated 18±8,6 months after surgery. In each group clinical evaluation, cardiopulmonary exercise testing, two-dimensional echocardiography, 24 ECG Holter monitoring, and BNP level were compared during follow-up.
RESULTS: Group A showed a significant improvement in SR rates at 6 and 18 months compared to group NA (29/45 versus 6/38 and 36/45 versus 5/38; p<0,01 respectively). Freedom from AF at follow-up was 83,92 % versus 7,58% respectively and freedom from AF recurrence on group A was 56,12%. SR restoration joins an improvement in cardiopulmonary exercise testing, in ejection fraction and demonstrates a reduction in BNP level compared to AF patients. (VO2 peak 14,57 ml/kg/min vs 12,11 ml/kg/min p=0,09, AT 8,98 ml/kg/min vs 7,75 ml/kg/min p=0,09; FE 56,23% vs 49,82% p=0,007; BNP 117,78 fmol/mL vs 219,17 fmol/mL p=0,08).
CONCLUSIONS: Concomitant left atrium RFA during mitral valve surgery significantly increases SR restoration and patient exercise capacity at follow-up. Our findings suggest that the use oh left atrial RFA during mitral valve surgery is justified.
Back to 2014 Annual Meeting Posters