Sick Sinus SyndromeAtrial FibrillationPacemaker, ArtificialArrhythmia, SinusCardiac Pacing, ArtificialBradycardiaElectrocardiographyHeart BlockHeart AtriaSinoatrial NodeSyncopeAtrial Function, RightSyndromeHeart Conduction SystemNAV1.5 Voltage-Gated Sodium ChannelElectrocardiography, AmbulatoryArrhythmias, CardiacAtrioventricular NodeCatheter AblationAzygos VeinTelemetryAtrioventricular BlockCarotid SinusHeart RateVentricular FibrillationAnti-Arrhythmia AgentsPulmonary VeinsElectric CountershockTreatment OutcomeCavernous SinusFollow-Up StudiesWarfarinAtrial FlutterAnticoagulantsMaxillary SinusProspective StudiesSick Leave