This study is intended to look at the effect of the SJM vibrating Patient Notifier™ system, which will warn the patient of possible failures of the implanted system, on reducing patient device related anxiety

Inclusion Criteria:

• Patient has recently (min. 2 weeks - max. 14 weeks) been implanted with an SJM ICD with the Patient Notifier™ feature;
• Patient is willing and able to independently comprehend and complete the study-related questionnaires;
• Patient has signed the study specific informed consent form.

Exclusion Criteria:

• have already had a Patient Notifier™ alert since implant;
• had a prior device implant (PM or ICD);
• have not been discharged from the hospital since device implant;
• have evidence of psychosis, dementia or cognitive impairment as documented in the patients' hospital records;
• cannot commit to the follow-up schedule;
• have a life expectancy of less than 1 year;
• are on a waiting list for a heart transplant;
• are less than 18 years old;
• are pregnant;