This registry is designed to gather further evidence, in addition to the SD01 Master Study, for the safety and efficacy of the SD01 ICD lead.

Inclusion Criteria:

• Meet a standard indication for ICD/CRT-D therapy
• First ICD/CRT-D implantation or upgrade from pacemaker
• Signed informed consent form
• Willing to participate for the whole duration of the registry
• Patient accepts Home Monitoring concept and is able to activate and use the Cardiomessenger
• Patient has legal capacity and ability to consent

Exclusion Criteria:

• Meet a standard contraindication for an ICD/CRT-D therapy
• Age <18 years
• Pregnant or breast-feeding women
• Cardiac surgery planned within the next six months
• Enrollment in another cardiac clinical investigation with active treatment arm
• Mechanical tricuspid valve prosthesis or severe tricuspid valve disease
• Dexamethasone acetate intolerance

Patients with standard ICD/CRT-D (cardiac resynchronization therapy plus defibrillator) indication