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Invitation to participate will be based either upon personal referral of one of the investigator, previous collaboration or based on a meta-analytic review of the literature published on the subject within the past 20 years.\n* Patients: Females and males of \\>18 years undergoing any type of VT\u002FPVC ablation. While we will accept redo-procedure we will ask for a unique patient-identifier to link procedures belonging to the same patients together.\n* Interventions: VT\u002FPVC ablation (first intervention or re-do) as routinely performed by the participating centers\n* Outcomes: Severe complications, defined as hemodynamic instability requiring mechanical intensive-care management, tamponade, stroke, cardiac arrest, myocardial infarction, phrenic nerve palsies, major bleeding requiring transfusion, vascular or cardiac complication requiring surgery, procedure-related death.\n* Setting: Observational cohort studies, registries, retrospective cohort studies. Data stemming from RCTs (Randomized controlled trials) will not be collected as they likely do not represent a \"real-life\" setting.\n* Length of follow-up: Peri-procedural complications\n* Years considered: Not limited to a specific time-frame, but to reflect common ablation practices, we will focus on data from the 20 past years.\n* Number of patients provided : No lower limit of patients provided per dataset or ablation volume per year to include high- as well as low-volume centers\n\nExclusion Criteria:\n\n* Refusal of the center to participate.\n* Less than 10 procedures available in the dataset (no case reports)\n* Missing essential baseline characteristics, missing collection of sufficient details regarding each complication.","ALL","18 Years",{"count":410,"type":411},15000,"ESTIMATED","OBSERVATIONAL","The investigators aim to characterize patients presenting with a severe ventricular tachycardia (VT) and premature ventricular complex (PVC)-ablation-related complication including patient characteristics, procedural details and subsequent management of the complication by gathering existing patient-level data.",[415,416],"Ventricular Tachycardia (VT)","Premature Ventricular Complexes",[418],"Ablation","2026-08-17",{"date":421,"type":422},"2026-08-20","ACTUAL",{"date":424,"type":422},"2024-07-01",{"date":426,"type":411},"2028-12-31",{"name":5,"class":6},25]