A randomized controlled trial of pulsed field ablation vs antiarrhythmic therapy as a first-line treatment for persistent atrial fibrillation: The AVANT GUARD trial rationale and design
Bibliographic record
Abstract
Background: Recent studies have established catheter ablation as a safe and superior alternative to antiarrhythmic drugs (AADs) as a first-line therapy in patients with paroxysmal atrial fibrillation (AF). There are no randomized controlled trials assessing this strategy in patients with persistent AF. Objective: This study aims to establish the safety and effectiveness of pulsed field ablation (PFA) as a first-line treatment for persistent AF compared with AAD therapy. Methods: AVANT GUARD (A Prospective Randomized Multicenter Global Study Comparing Pulsed Field Ablation vs Anti-Arrhythmic Drug Therapy as a First Line Treatment for Persistent Atrial Fibrillation) is a multicenter, global, pivotal investigational device exemption study that compares the safety and effectiveness of PFA with the pentaspline PFA catheter to AADs as first-line therapy for patients with persistent AF. All patients will receive an implantable cardiac monitor. Results: The primary safety end point, evaluated in PFA subjects, is a composite of defined acute and chronic device- and procedure-related serious adverse events. The primary effectiveness end point, evaluated in randomized PFA and AAD subjects at 12-month follow-up, is a composite of acute and chronic treatment success including freedom from atrial arrhythmia recurrence lasting ≥30 seconds (symptomatic) or ≥1 hour (asymptomatic), electrical cardioversion, or (re)ablation. Conclusion: AVANT GUARD will help fill a critical gap in our understanding of treatment approaches and disease progression for patients with persistent AF by providing a direct comparison between ablation using PFA versus AAD treatment as a first-line therapy with continuous monitoring to assess outcomes.
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one teacher head, not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".