Catheter ablation reduces atrial fibrillation recurrence compared to anti-arrhythmic drugs in paroxysmal and persistent casesCatheter Ablation Shows Lower Recurrence Rates for Atrial Fibrillation

Heart rhythm Published July 22, 2026 Study authors: Idema Demy L, Kusters Mike P T, Huis In 't Veld Linde F, Huygens Simone, Versteegh Matthijs, Spijker… PubMed ↗ DOI ↗ Editorial oversight: Dr. Amelia Tan, PhD · Internal Medicine & Chronic Disease

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Key Takeaway

Note that catheter ablation is associated with lower AF recurrence than anti-arrhythmic drugs in several subgroups.

This systematic review and meta-analysis of randomized controlled trials evaluates the efficacy of catheter ablation versus anti-arrhythmic drugs (AAD) in patients with paroxysmal and persistent atrial fibrillation. The analysis focuses on AF recurrence, all-cause mortality, and associated safety profiles for both treatment modalities.

The authors synthesized data showing that AAD is associated with higher rates of AF recurrence compared to catheter ablation across multiple groups: 1.76 (95% CI, 1.34-2.32) in treatment-naïve paroxysmal patients, 1.62 (95% CI, 1.40-1.87) in AAD-exposed persistent patients, and 2.12 (95% CI, 1.61-2.80) in paroxysmal patients previously exposed to ablation. Additionally, the analysis suggests a potential increase in all-cause mortality for those treated with AAD compared to catheter ablation in both paroxysmal (1.79; 95% CI, 0.80-4.02) and persistent (1.45; 95% CI, 0.56-3.75) cohorts.

While catheter ablation appears more effective for reducing recurrence, the authors note it is associated with rare but serious complications such as pericardial tamponade and phrenic nerve paralysis. Conversely, AAD treatment was associated with gastrointestinal symptoms and syncope (0.8% to 3%). Clinical decisions should balance the higher efficacy of ablation against its specific procedural risks compared to the more common side effects of medication.

How this fits prior evidence

This meta-analysis addresses a gap in comparing long-term outcomes between catheter ablation and anti-arrhythmic drugs for atrial fibrillation. It complements existing evidence regarding rhythm control, which noted that aggressive rhythm control increases risks of medication side effects. While this study highlights the higher recurrence rates associated with AAD, it also provides specific data on procedural complications for ablation to balance the clinical perspective.

This meta-analysis looked at how patients with atrial fibrillation (AF) responded to two different treatments: anti-arrhythmic drugs and catheter ablation. The study focused on people with both paroxysmal and persistent types of the condition to see which method kept the heart rhythm more stable over time.

The results showed that patients who received catheter ablation had lower rates of AF recurrence compared to those taking anti-arrhythmic drugs. This trend was seen across several groups, including those who had never tried medication before or those whose condition was persistent. Additionally, there were indications that mortality rates might be higher for patients treated only with medications.

While the data suggests ablation may be more effective at preventing recurrence, it is important to consider the risks of each method. Anti-arrhythmic drugs can cause side effects like gastrointestinal issues or fainting. Catheter ablation carries a risk of rare but serious complications, such as pericardial tamponade or phrenic nerve paralysis. Patients should talk to their doctors to weigh these specific risks against the benefits for their unique situation.

What this means for you:

Catheter ablation may show lower recurrence rates than drugs, but both treatments have different risks and side effects.

Common questions

Is catheter ablation more effective than medication?

The study found that patients treated with catheter ablation had lower rates of atrial fibrillation recurrence compared to those taking anti-arrhythmic drugs. This was observed in both paroxysmal and persistent cases, suggesting ablation may be more effective at keeping the heart rhythm stable.

What are the risks of using anti-arrhythmic drugs?

Patients taking anti-arrhythmic drugs may experience side effects such as gastrointestinal symptoms or syncope (fainting). These issues occurred in between 0.8 and 3% of cases in the data reviewed.

What are the risks of catheter ablation?

While potentially more effective for preventing recurrence, catheter ablation can lead to rare but serious complications. These include pericardial tamponade and phrenic nerve paralysis, which occurred in between 0.3 and 2.5% of cases.

Study Details

Study typeMeta analysis

EvidenceLevel 1

PublishedJul 2026

PMID41881373

View Original Abstract ↓

Anti-arrhythmic drugs (AAD) and catheter ablation are common treatments for rhythm control in patients with atrial fibrillation (AF), but a comprehensive comparison of their benefits and harms is lacking. A systematic review performed by National Institute for Health and Care Excellence (2021) was updated using a database search in MEDLINE, Embase and Cochrane CENTRAL in October 2024. Selection was conducted independently by 2 reviewers. Study characteristics and results were extracted by 1 reviewer and verified by a second. Study quality was assessed using the Cochrane Risk of Bias 2 tool and the certainty of evidence was determined using the Grading of Recommendations, Assessment, Development and Evaluation (GRADE) approach. Twenty-two studies (31 references) were included in the review. Evidence showed that there may be more recurrence of AF in patients with treatment-naïve paroxysmal AF (relative risk [RR], 1.76; 95% confidence interval [CI], 1.34-2.32) and AAD-exposed persistent AF (RR, 1.62; 95% CI, 1.40-1.87), and probably more recurrence in patients with paroxysmal AF previously exposed to catheter ablation (RR, 2.12; 95% CI, 1.61-2.80) when treated with AAD compared with catheter ablation. In both paroxysmal- and persistent AF patients, there may also be more all-cause mortality when treated with AAD vs catheter ablation (RR, 1.79; 95% CI, 0.80-4.02 and RR, 1.45; 95% CI, 0.56-3.75, respectively). Incidence of medication side effects, including gastrointestinal symptoms and syncope, ranged between 0.8 and 3%. Incidence of catheter ablation complications, such as pericardial tamponade and phrenic nerve paralysis, between 0.3 and 2.5%. This review found that, in some subgroups of patients, catheter ablation was better than AAD treatment when considering AF recurrence and mortality. However, catheter ablation has rare but serious complications that should be considered when making informed treatment decisions.

Catheter ablation reduces atrial fibrillation recurrence compared to anti-arrhythmic drugs in paroxysmal and persistent casesCatheter Ablation Shows Lower Recurrence Rates for Atrial Fibrillation

How this fits prior evidence

Common questions

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Catheter ablation reduces atrial fibrillation recurrence compared to anti-arrhythmic drugs in paroxysmal and persistent casesCatheter Ablation Shows Lower Recurrence Rates for Atrial Fibrillation

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