Surgical ablation reduces POAF but increases pacemaker risk in non-mitral valve surgery

This systematic review and meta-analysis compared concomitant surgical ablation to isolated non-mitral valve surgery in patients with atrial fibrillation. The analysis included 2 randomized controlled trials and 5 propensity score-matched studies, encompassing a total of 39,348 AF patients undergoing non-mitral valve surgery. Of these patients, 18,394 (46.7%) underwent surgical ablation. The primary outcomes assessed were postoperative atrial fibrillation, early all-cause mortality, postoperative pacemaker implantation, and postoperative stroke. Risk ratios with 95% confidence intervals were calculated using a random effects model. Compared with isolated non-mitral valve surgery, surgical ablation was associated with a significant reduction in postoperative AF (RR: 0.73; 95% CI: 0.67 to 0.79; I²=0%). However, surgical ablation was also associated with a higher risk of postoperative pacemaker implantation (RR: 1.34; 95% CI: 1.14 to 1.57; I²=0%). No statistically significant differences were found between groups for early all-cause mortality (RR: 0.96; 95% CI: 0.76 to 1.22; I²=65%) or postoperative stroke (RR: 1.06; 95% CI: 0.89 to 1.26; I²=0%). A subgroup analysis comparing results from randomized controlled trials and propensity score-matched studies showed significant consistency across study designs. The authors concluded that while surgical ablation reduces postoperative AF in non-mitral valve surgery, it carries an increased risk of requiring postoperative pacemaker implantation, with no observed difference in early mortality or stroke.

If you have atrial fibrillation (AFib) and need heart surgery that isn't on your mitral valve, your surgeon might suggest adding a procedure called surgical ablation to try to fix your irregular heartbeat during the same operation. A large review of studies looked at what happens when this is done. The analysis found that adding the ablation procedure was linked to a significant reduction in AFib coming back after surgery. This is a meaningful benefit for patients hoping to leave the hospital with a normal heart rhythm. However, the review also found a clear trade-off: patients who had the ablation were more likely to need a permanent pacemaker implanted after their surgery. The analysis did not find a difference in the risk of dying early after surgery or having a stroke between those who got the ablation and those who only had the planned heart surgery. This information helps patients and doctors have a clearer conversation about the potential pros and cons of combining these procedures.