Burden of AF alerts
ICDs, syncope
A large proportion (48.8%) of AF episodes were transmitted by ILRs, despite ILRs accounting for only 29.5% of the cohort. This may be partially attributable to the nature of ILR indications, including syncope [By comparison, despite accounting for the bulk of CIEDs (44.9%) in the cohort, PPMs were responsible for only 35.7% of AF episodes, while defibrillator patients represented 25.6% of the cohort but transmitted only 15.5% of AF episodes. Device programming in PPMs and ICDs may further explain this between-device group disparity; patients with known AF, on appropriate therapy, may be programmed with a longer AF duration threshold for triggering of an RM alert.