Key result
Concomitant left atrial radiofrequency ablation during heart valve surgery resulted in a 56.9% immediate conversion to sinus rhythm, which did not differ significantly from a 50:50 chance outcome.
Why the study?
The study aimed to determine the success rates of left atrial radiofrequency cardiac ablation for atrial fibrillation during heart valve surgery.
Does concomitant left atrial radiofrequency ablation improve sinus rhythm conversion in patients with atrial fibrillation undergoing heart valve surgery?
Observational (n=53)
No
Does concomitant left atrial radiofrequency ablation improve sinus rhythm conversion in patients with atrial fibrillation undergoing heart valve surgery?
Absolute Event Rate: 56.9% vs 50%
p-value: p=0.325
Concomitant left atrial radiofrequency ablation during valve surgery achieves an initial sinus rhythm conversion rate of 56.9%, with pre-operative ejection fraction ≥50% being a significant predictor of success.
Observational data on concomitant ablation during valve surgery remain hypothesis-generating; prospective randomized trials are needed to guide practice.
OBJECTIVES: The aim of this study was to determine the success rates of left atrial radiofrequency cardiac ablation for atrial fibrillation during heart valve surgery. METHODS: This was a three-year retrospective study of 53 patients who had valve surgery and cardio-ablation. Immediate and long-term overall outcomes were analysed at three, six, nine, 12 and 24 months. The results were tested for significance by comparing to a chance outcome (50:50 probability) using the Z-test for the normal approximation of the binomial distribution. RESULTS: A total of 56.9% of patients converted immediately to sinus rhythm, with that number increasing over time. Pre-operative poor ejection fraction was the only predictor of low success rates following ablation. Long-term rhythm was determined by the patient's rhythm between three and six months. CONCLUSIONS: Concomitant left atrial ablation during valve surgery is effective in treating atrial fibrillation. Routine use of anti-arrhythmic medication after surgical ablation is not recommended.
No takes yet. Share an insight, caveat, or question.
Nyamande et al. (2022) conducted an observational in Atrial fibrillation and valvular heart disease (n=53). Concomitant left atrial radiofrequency ablation vs. Chance outcome (50% probability) was evaluated on Immediate conversion to sinus rhythm (0-3 months) (p=0.325). Concomitant left atrial radiofrequency ablation during heart valve surgery resulted in a 56.9% immediate conversion to sinus rhythm, which did not differ significantly from a 50:50 chance outcome.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: