5 | STUDY LIMITATIONS
The main limitations include the small sample size and single-center experience, which may limit the validation of the reproducibility of study results to assess the efficacy and complications. No coronary angiography was performed in our series. Some subclinical coronary vasospasms were not observed during the procedure. Assessments of haemolysis and acute renal injury after the procedure were not performed in our enrolled patients. The other limitation of the present study is the short duration of follow-up and the small size of redo patients. The long-term durability of the lesions and recurrence rate after ablation need to be evaluated specifically in prospective studies.