Overview
Unicenter, 1:1 randomized, open-labelled clinical trial comparing left atrial flutter ablation using high density mapping or strict lineal ablation. Main outcome: arrhythmia recurrences over 1 year follow-up with daily 1-lead 30 seconds ECG samples.
Eligibility
Inclusion criteria
- Left atrial flutter1 inducible during electrophysiological evaluation.
- Clinical indication for ablation: a) symptoms (palpitations, dizziness, syncope, breathlessness, derangement, heart failure), tachymiopathy, b) poor heart rate control, or c) recurrence after electrical cardioversion or failure of one antiarrhythmic drug.
- Informed consent.
- Patients will be enrolled if LAFL is clinically suspected but finally randomized if this mechanism is established by electrophysiologic evaluation according to the criteria stated above.
Exclusion criteria
- Previous ablation of LAFL.
- Previous linear ablation in the LA except for pulmonary vein isolation.
- Absolute contraindication for oral anticoagulation.
- Stroke or acute coronary syndrome less than 3 months before ablation.
- Complex congenital heart disease.