Testing two catheter ablation approaches for recurring atrial tachycardia after prior heart procedures
Compares standard and minimal catheter ablation for atrial tachycardia in adults after prior heart procedures.
Plain-language title generated from the registry record
Registry title: Ablation of Consecutive Atrial Tachycardia
Key facts
- Where
- Berlin, Düsseldorf, Hagen, Hamburg, Karlsruhe, and Kiel, GermanySee the 6 sites
Where in Germany
- Vivantes Klinikum am Urban BerlinBerlin, GermanyTaking people
- Evangelic Hospital DüsseldorfDüsseldorf, GermanyTaking people
- Evangelic Hospital Hagen-HaspeHagen, GermanyTaking people
- Asklepios St. GeorgHamburg, GermanyTaking people
- Städtisches Klinikum KarlsruheKarlsruhe, GermanyTaking people
- Universitatsklinikum Schleswig-HolsteinKiel, GermanyTaking people
Questions to ask the study team
- How often do I need to come in, and for how long each time?
- Are travel costs paid?
- Can I keep my own doctor?
- What happens if I want to stop?
Trial details
- Who runs it
- Evangelical Hospital Düsseldorf
- Trial code
- NCT05239364
- Record updated
- 30 April 2026
- Original description
Ablation of consecutive atrial tachycardia (AT) after ablation of atrial fibrillation (AF) or cardiac surgery can be challenging due to complex substrate and AT mechanisms. A substantial portion of patients is known to show various tachycardias and recurrences occur in a noticeable number of cases. With the availability of novel ultra-high-density mapping techniques characterization and understanding of AT mechanisms and underlying substrate can be improved. Aim of this prospective, multi-center, randomized study is to compare a standard AT ablation approach versus minimalized ablation of the clinical AT in regards to arrhythmia free survival.Read full original descriptionShow less
Ablation of CONseCutive atriaL Tachycardia gUided by Ultra-high-DEnsity Mapping
Ablation of consecutive atrial tachycardia (AT) after ablation of atrial fibrillation (AF) or cardiac surgery can be challenging due to complex substrate and AT mechanisms. A substantial portion of patients is known to show various tachycardias and recurrences occur in a noticeable number of cases. With the availability of novel ultra-high-density mapping techniques characterization and understanding of AT mechanisms and underlying substrate can be improved. Aim of this prospective, multi-center, randomized study is to compare a standard AT ablation approach versus minimalized ablation of the clinical AT in regards to arrhythmia free survival.
Inclusion: Consecutive AT subsequent to prior AF ablation procedure or cardiac surgery; Surface ECG-documentation of AT as primary clinical arrhythmia; ECG indicating stable, map-able AT (stable activation sequence, and CL stability) with cycle length ≥ 200ms.
Exclusion: No previous atrial fibrillation ablation procedure or cardiac surgery; Pregnant women or women of childbearing potential without a negative pregnancy test within 48 hours prior to treatment; History of hemorrhagic diathesis or other coagulopathies; Has any condition that would make participation not be in the best interest of the subject; < 18 years; Contraindications for oral anticoagulation; Hyper- or hypothyroidism.