Master Study of the Acticor/Rivacor ICDs/CRT-Ds and the Plexa ProMRI S DX Lead

Inclusion Criteria:

• Standard indication for ICD or CRT-D therapy according to clinical guidelines

• Planned for de novo implantation of an ICD/CRT-D, or upgrade/exchange from existingICD/CRT-D or pacemaker implant

• Able to understand the nature of study and to provide written informed consent

• Willing and able to perform all follow-up visits at the study site

• Willing and able to use the CardioMessenger and accepts the BIOTRONIK HomeMonitoring concept

Exclusion Criteria:

• Contraindication to ICD and CRT-D therapy

• Planned for implantation of a CRT-DX system

• For VR-T DX devices: permanent atrial tachyarrhythmia

• For VR-T DX devices: patients requiring atrial pacing

• Less than 18 years old

• Pregnant or breast feeding

• Participating in another interventional clinical investigation

• Life-expectancy is less than 12 months

• Cardiac surgical procedure planned within 12 months after implantation (includinginterventional procedures like ablation, valve replacement, heart transplant etc.).Procedures to occur during or prior to implantation are not exclusionary