Redo-Pulmonary Vein Isolation Using Pulsed-Field Ablation With Versus Without Posterior Wall Ablation in Patients With Symptomatic Atrial Fibrillation: A Multi-Centre Randomized Clinical Trial: The REDO-PIFPAF-PFA Study
试验速览
- 阶段
- 不适用
- 状态
- 尚未招募
- 发起方
- 入组人数
- 270
- 试验地点
- 5
- 主要终点
- Time to first recurrence of any atrial tachyarrhythmia day 61-365
研究概览
简要总结
The study will compare two ablation strategies in patients with paroxysmal or persistent atrial fibrillation undergoing repeat ablation using pulsed-field ablation: redo pulmonary vein isolation only versus redo pulmonary vein isolation with added posterior wall ablation.
详细描述
In most patients, recurrence after ablation is caused by reconnection of previously isolated pulmonary veins (PV). However, atrial fibrillation (AF) recurrence may also result from progressive atrial remodelling, structural disease progression, and triggers originating outside the PVs. While there are multiple randomized controlled trials and clear recommendations for de novo ablations, there is a notable lack of studies and guideline recommendations for redo ablation procedures. Current practice therefore remains heterogeneous, and optimal lesion sets in the redo setting are not defined. The study aims to address this deficiency by undertaking a randomised comparison of two strategies that have already been adopted.
研究设计
- 研究类型
- Interventional
- 分配方式
- Randomized
- 干预模型
- Parallel
- 主要目的
- Treatment
- 盲法
- Single (Outcomes Assessor)
盲法说明
The independent clinical events committee (CEC) will remain blinded to treatment allocation throughout endpoint adjudication.
入排标准
- 年龄范围
- 18 Years 至 —(Adult, Older Adult)
- 性别
- All
- 接受健康志愿者
- 否
入选标准
- •Documented recurrence of paroxysmal or persistent AF following single prior catheter ablation with PVI, confirmed by 12-lead ECG, Holter monitoring, or ICM within the last 2 years.
- •Candidate for repeat catheter ablation according to current European Society of Cardiology (ESC) AF management guidelines.
- •Continuous oral anticoagulation with a vitamin K antagonist or non-vitamin K oral anticoagulant (NOAC) for ≥ 4 weeks prior to the ablation, or transoesophageal echocardiography (TEE) and/or cardiac computed tomography (CT) within 48 hours before the procedure excluding LA thrombus.
- •Age ≥ 18 years at the time of informed consent.
- •Written informed consent obtained prior to any study-related procedures.
排除标准
- •Previous LA surgery
- •> 1 prior LA ablation
- •LA ablation outside of the PVs in the first LA ablation
- •LA diameter >60 mm in the parasternal long axis
- •Patients in persistent AF lasting >3 years
- •AF due to reversible causes (e.g. hyperthyroidism, cardiothoracic surgery)
- •Pre-existing PV stenosis or PV stent
- •Pre-existing hemidiaphragmatic paralysis
- •Contraindication to anticoagulation or radiocontrast materials
- •Prior mitral valve surgery
- •Severe mitral regurgitation or moderate/severe mitral stenosis
- •Myocardial infarction during the 3-month period preceding the consent date
- •Ongoing triple antithrombotic/anticoagulation therapy
- •Cardiac surgery during the 3-month interval preceding the informed consent date or scheduled cardiac surgery/transcatheter aortic valve implantation procedure
- •Significant congenital heart defect (including atrial septal defects or PV abnormalities but not including a patent foramen ovale)
- •New York Heart Association (NYHA) class III or IV congestive heart failure
- •Left ventricular ejection fraction (LVEF) <35%
- •Hypertrophic cardiomyopathy or left septal wall thickness >1.5 cm
- •Significant chronic kidney disease (eGFR <30 ml/min)
- •Uncontrolled hyperthyroidism
- •Cerebral ischemic event (stroke or TIA) during the 6-month interval preceding the informed consent date
- •Ongoing systemic infections
- •Cardiac amyloidosis
- •Pregnancy (to exclude pregnancy a blood test (HCG) is performed in women < 50 years before inclusion)
- •Life expectancy less than one year per physician opinion
- •Currently participating in any other clinical trial, which may confound the results of this trial.
- •Unwilling or unable to comply fully with the study procedures and FU.
结局指标
主要结局
Time to first recurrence of any atrial tachyarrhythmia day 61-365
时间窗: Day 61-365 post-ablation
Time to first recurrence of atrial tachyarrhythmia (atrial fibrillation (AF), atrial flutter (AFL) or atrial tachycardia (AT)) between day 61 and 365 post ablation as detected on an implantable cardiac monitor (ICM). AF, AFL or AT will be defined as an episode of at least 120 seconds (the shortest-duration episode that could be programmed for detection on the implantable cardiac monitor) with a continuous atrial arrhythmia of at least 30 seconds.
次要结局
- Treatment-emergent adverse events: Cardiac tamponade requiring drainage(Day 0-90 post-ablation)
- Treatment-emergent adverse events: Persistent phrenic nerve palsy lasting >24 hours(Day 0-90 post-ablation)
- Treatment-emergent adverse events: Serious vascular complication requiring intervention(Day 0-90 post-ablation)
- Treatment-emergent adverse events: Stroke or TIA(Day 0-90 post-ablation)
- Treatment-emergent adverse events: Atrioesophageal fistula(Day 0-90 post-ablation)
- Treatment-emergent adverse events: Death(Day 0-90 post-ablation)
- Total procedure time(Day 0, during procedure)
- Total left atrial indwelling time(Day 0, during procedure)
- Total fluoroscopy time(Day 0, during procedure)
- Total radiation dose(Day 0, during procedure)
- Change in hs-troponin on Day 1 post-ablation compared with pre-procedural hs-troponin(Pre-procedural (day -1 or day 0) to day 1 post-ablation)
- Post-ablation 3D-EAM: Assessment of atrial low-voltage/scar(Day 0, shortly after ablation)
- Post-ablation 3D-EAM: Proportion of isolated veins(Day 0, shortly after ablation)
- Post-ablation 3D-EAM: Proportion of isolated carinas(Day 0, shortly after ablation)
- Post-ablation 3D-EAM: Lesion size(Day 0, shortly after ablation)
- Post-ablation 3D-EAM: Posterior wall ablation success rate(Day 0, shortly after ablation)
- Time to first recurrence of any atrial tachyarrhythmia in patients with left atrial posterior wall scar and posterior wall ablation versus without posterior wall ablation(up to 3 years)
- Arrhythmia burden for each participant between days 0-60 evaluated based on continuous ICM (Implantable cardiac monitor)(Day 0-60 post-ablation)
- Arrhythmia burden for each participant between days 61 and 365 evaluated based on continuous ICM(Day 61-365 post-ablation)
- Arrhythmia burden for each participant between days 365 until explantation or end of life (EOL) of the ICM(Day 365 post-ablation to explantation of ICM or end of life of ICM (up to 4 years after implantation of ICM))
- Correlation of AF burden to symptoms and quality of life (QoL) changes(Day 0-365 post-ablation)
- Reduction of AF burden by > 90% post ablation procedure(up to 3 years)
- Comparison of the prevalence of the type of arrhythmia recurrence during FU being atrial fibrillation or organized atrial arrhythmias (atrial flutter or atrial tachycardia)(up to 3 years)
- Time to first recurrence of atrial tachyarrhythmia between days 61 and 365 in patients with presence of scar on the posterior wall based on the pre-ablation voltage map versus patients with no scar on the posterior wall evaluated based on continuous ICM(up to 1 year)
- Prevalence of persistent or paroxysmal atrial fibrillation(up to 3 years)
- Average heart rate(Months 1, 2 and 3 post-ablation)
- Hospital or emergency room admission due to documented recurrence of atrial arrhythmias(up to 3 years)
- Repeat ablation procedure due to documented recurrence of atrial arrhythmias(up to 3 years)
- Reinitiation or continuation of antiarrhythmic drug therapy(up to 3 years)
- Electrical cardioversion due to recurrence(up to 3 years)
- Number of reconnected veins evaluated during redo procedures(During redo procedures between day 1 to 36 months post-ablation)
- Number of reconnected posterior walls evaluated during redo procedures(During redo procedures between day 1 to 36 months post-ablation)
- Evolution of QoL(Day 90 and day 365 post-ablation)
- Stroke or TIA (Transient ischemic attack)(3, 12, 24 and 36 months)
- All-cause death(after 3, 12, 24 and 36 months)
