Methods and results
In this retrospective, multicentre cohort study, we included 574 remotely monitored automatic (AICD) and cardiac resynchronization devices (CRT-D) recipients implanted before January 1st 2019 at seven Hospitals of Campania Region, comparing the incidence of arrhythmias occurred during the lockdown period due to COVID-19 epidemics (from March 9th to May 1st 2020) with the arrhythmias rate of the corresponding period in 2019. An effective retrospective data collection was performed through remote monitoring, as this tool allows the direct transfer of the the information stored by the implantable devices to medical personnel.
During the lockdown period, we observed ventricular tachyarrhythmias (ventricular tachycardia or fibrillation) in 25 (4.8%) patients as compared to 12 (2.3%) during the corresponding 2019 period (p < 0.04); new-onset atrial fibrillation was detected in 38 (8.2%) subjects during lockdown period and in 24 (5.2%) during the reference period (p < 0.004).