Multicentric, observational, retrospective registry including patients underwent implantable device implantation (pacemaker or ICD) for any indication in the period from 2009 to 2016, followed by remote monitoring. The aims of the registry are to evaluate the occurrence of atrial arrhythmias, of hospitalizations, and the mortality during a long-term follow-up.

Inclusion Criteria:

• ICD of pacemaker implantation fo any indication
• Followed by remote monitoring
• Age >18 years

Exclusion Criteria:

• life expectancy of less than one year

Consecutive patients underwent ICD or pacemaker implantation from January 2009 to September 2016 for any indication and followed by remote monitoring at enrolling hospitals