Key result
RF ablation maze plus MV surgery achieves ~89% sinus rhythm, predicted by LA diameter <6 cm.
Cohort (n=63)
Preoperative left atrial diameter < 6 cm is a strong predictor of successful conversion to sinus rhythm following radiofrequency maze and mitral valve surgery.
May guide LA size-based selection for maze with mitral surgery; leaves open randomized confirmation.
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.
No takes yet. Share an insight, caveat, or question.
Chaiyaroj et al. (2008) conducted a cohort in Atrial fibrillation in patients undergoing mitral valve surgery (n=63). Radiofrequency ablation maze operation and mitral valve surgery was evaluated on Postoperative sinus rhythm. Radiofrequency ablation maze operation combined with mitral valve surgery achieved an 88.5% rate of sinus rhythm at 18 months, with preoperative left atrial diameter <6 cm strongly predicting success.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: