Clinical and Device Functional Assessment of Real World ICD Patients

For these reasons, it is very important to observe the clinical practice on a large variety of centers and countries, with the objective to collect long term safety and performance data in patients undergoing ICD/CRT-D device implantation (first implant, replacement or upgrade). The safety and performance of the ICDs can be evaluated through the collection of multiple parameters such as, but not limited to: * Clinical parameters, like patient demographics and history, procedural and hospital discharge data, as well as the short and long term serious adverse events (death and hospitalization) * Device parameters, such as delivered shocks, ATP, or other device therapies Worldwide selected centers will be invited to participate in this prospective study and include their "real-world" patients treated with Sorin Group commercially available ICDs and CRT-Ds devices.