Jude Medical, Biotronik or Medtronic will undergo an initial evaluation. Patients who have given informed consent and who fulfill the inclusion/exclusion criteria will be screened. Randomization to the RM or control group will be conducted within 30 days after ICD or CRT-D implantation and after the final programming of sensing and stimulation parameters. The time of observation in both groups will be 12 months after randomization. In the RM group only, one follow-up visit will be planned 12 months after being enrolled in the trial. In the control group, follow-up visits will be planned at 3, 6, 9 and 12 months after being enrolled in the trial, according to the normal procedure in our center. Unscheduled visits in both groups can be initiated either by the patient or by the supervising staff. The limits of therapeutic intervention will be individualized depending on the clinical situation according to valid ESC guidelines and will include the following: modification of device settings, modification of pharmacotherapy and performing necessary invasive diagnostic and therapeutic procedures.