Atrial flutter is a common condition that is effectively treated by ablation using radiofrequency. Due to its feasibility, effectiveness and low procedural risk, radiofrequency ablation is a first-line treatment of atrial flutter. Several studies have been published concerning the factors associated with the occurrence of atrial fibrillation during or after flutter ablation, in patients with and without clinical history of atrial fibrillation. 26 to 46% of patients are likely to develop it, according to ECG or Holter diagnoses. The figure rises to more than 50% with a diagnosis with an implantable loop recorder. In patients without a prior history of atrial fibrillation before ablation, anticoagulants are routinely administered 4-6 weeks after flutter removal by most cardiologists. Although there are no specific guidelines for anticoagulation after flutter ablation, it is currently recommended to treat the patient as for atrial fibrillation. It is therefore crucial to identify in advance patients at high risk of atrial fibrillation after flutter ablation, in order to assess the appropriateness of maintaining oral anticoagulant therapy. The objectives of this study are: * to evaluate the frequency and identify the factors predicting the occurrence of atrial fibrillation after flutter ablation * to determine the risk of a stroke occurring in patients with atrial fibrillation after flutter ablation. The database consists in patients of the CHU Brugmann Hospital treated between 1996 and 2018.
Study Type
OBSERVATIONAL
Enrollment
50
Data extraction from the patient's Medical Files
CHU Brugmann
Brussels, Belgium
Age at ablation
Age of the patient at the date of the flutter ablation
Time frame: One day
Gender
Gender of the patient at the date of the flutter ablation
Time frame: One day
Antecedents of ischemic cardiomyopathy
Antecedents of ischemic cardiomyopathy (yes/no) at the date of flutter ablation
Time frame: One day
Antecedents of cardiomyopathy
Antecedents of cardiomyopathy (yes/no) at the date of flutter ablation
Time frame: One day
Antecedents of dilated cardiomyopathy
Antecedents of dilated cardiomyopathy (yes/no) at the date of flutter ablation
Time frame: One day
Diabetes
Diabetes diagnosis (yes/no) at the date of flutter ablation
Time frame: One day
Chronic pulmonal disease
Chronic pulmonal disease diagnosed at the date of flutter ablation
Time frame: One day
Cardiac surgery antecedents
Presence of cardiac surgery antecedents at the date of flutter ablation
Time frame: One day
Atrial fibrillation antecedents
Antecedents of Atrial fibrillation at the date of flutter ablation
Time frame: One day
Beta-blockers post-ablation
Prescription of Beta-Blockers after the flutter ablation (yes/no)
Time frame: One day
Amiodarone post-ablation
Prescription of amiodarone after the flutter ablation (yes/no)
Time frame: One year
Class I antiarrhythmic drugs post-ablation
Prescription of Class I antiarrhythmic drugs post-ablation
Time frame: One year
Arterial hypertension
Presence of arterial hypertension on the day of flutter ablation
Time frame: One day
Antecedents of stroke
Antecedents of stroke
Time frame: One day
Stroke after flutter ablation
Occurence of stroke after the flutter ablation
Time frame: One year
Antecedents of peripheric thromboembolic events
Antecedents of thromboembolic events on the day of flutter ablation
Time frame: One day
Peripheric thromboembolic events after flutter ablation
Thromboembolic events after flutter ablation
Time frame: One year
Atrial Fibrillation apparition delay
Delay of apparition of atrial fibrillation after flutter removal
Time frame: Up to one year
Left ventricular ejection fraction of the heart
Left ventricular ejection fraction of the heart at the day of flutter removal (echographic data)
Time frame: One day
Left atrium size of the heart
Left atrium size of the heart at the day of flutter removal (echographic data)
Time frame: One day
Pulmonary arterial pressure
Pulmonary arterial pressure at the day of flutter removal (echographic data)
Time frame: One day
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