Observational BELgian Registry of Implanted EV-ICD to Evaluate Parameters and Complications of the New Device in Real World Settings

The goal of this observational study is to follow all patients implanted with extravascular implantable cardioverter-defibrillators (EV-ICDs) in Belgium throughout the lifetime of the devices. The main goal of the study is to keep track of: * all parameters of the device * complications * arrhythmia detection and therapy delivery * clinical endpoints (quality of life, cardiac and infectious events) Participants who underwent or will undergo an EV-ICD implantation as part of their regular medical care will be asked if data can be collected from their medical record. No additional tasks are required for the study.