Arrhythmia ablation procedures are in constant increase. Securing these invasive procedures is one of the major concerns. Complications are relatively rare but can be potentially severe. To describe early and mid-term (one month) complications and the long-term impact on symptoms and antiarrhythmic and anticoagulant agents prescription in a cohort of successive patients who underwent arrhythmia ablation in the department of cardiology of the university hospital of Brest. All patients undergoing interventional arrhythmia procedures are included and followed in the PRINT registry. We included 841 consecutive patients who underwent an arrhythmia ablation procedure between 2017 and 2019, and observed complications (occurring early during or after the procedure and at one month follow-up), symptoms at 3 months and 1 year follow-up, and medication at 1 year. The rate of severe complications was 6.8% with differences according to the type of procedure. The most frequent were vascular complications (2.8% in all patients), conductive disturbances (0.9%), and severe pericardial effusion without need for surgery (1.1% in all procedures, 2.7% in atrial fibrillation ablation, more often in case of radiofrequency ablation). Hypertension and left bundle branch block were independent risk factors for severe complications in our study. The rate of procedure-related death was very low (0.1%). Symptoms, including palpitations and dyspnea were significantly reduced at 1 year. The use of anticoagulant and antiarrhythmic therapy was significantly lower at 1 year. The complication rates in our study were similar, for equivalent procedures, to those reported in other series. In our population, we confirm the favorable impact of ablation procedures on symptoms and quality of life, with a significant decrease in the number of symptomatic patients and the discontinuation or reduction of drug treatment.