The EVOLVO study is designed to compare the remote defibrillator management to the current standard of care, to assess its ability to treat and triage patients more effectively.

Heart failure patients with implantable defibrillators (ICD) perform frequent clinic visits for routine device monitoring. Moreover, in case of clinical events, such as ICD shocks or alert notifications for changes in cardiac status or safety issues, they often visit the emergency department or the clinic for an unscheduled visit. These planned and unplanned visits create a great burden on healthcare providers. Internet-based remote device interrogation systems, allowing physician's remote access to patients' data, are being proposed for reducing routine and interim visits and for earlier detection and notification of alert conditions.

Inclusion Criteria:

• Patient with left ventricular systolic dysfunction, left ventricular ejection fraction ≤35%, as documented at the moment of ICD implant;
• Patient implanted with a wireless-transmission-enabled Medtronic ICD or CRT-D;
• Patient must be able and willing to replace regularly-scheduled in-office routine follow-ups with remote follow-ups;
• Patient must be able to attend all required follow-up visits at the study center.

Exclusion Criteria:

• Patient is less than 18 years of age;
• Patient is unwilling or unable to sign an informed consent;
• Patient life expectancy is less than 12 months;
• Patient is participating in another clinical study that may have an impact on the study endpoints.

Patient with left ventricular systolic dysfunction implanted wih ICD