Defibrillators, ImplantableDefibrillatorsTachycardia, VentricularVentricular FibrillationElectric CountershockDeath, Sudden, CardiacEquipment FailureArrhythmias, CardiacAnti-Arrhythmia AgentsAmiodaronePacemaker, ArtificialHeart ArrestCardiac Pacing, ArtificialEquipment DesignElectrodes, ImplantedElectrocardiographySyncopeTachycardiaDeath, SuddenTreatment OutcomeSotalolFollow-Up StudiesHeart FailureEquipment SafetyElectric InjuriesVentricular Dysfunction, LeftProsthesis DesignProspective StudiesStroke VolumeDevice RemovalImplantable NeurostimulatorsMulticenter Studies as TopicSurvival RateEquipment Failure AnalysisTime FactorsRetrospective StudiesCardiac Resynchronization TherapyRisk AssessmentProstheses and ImplantsCost-Benefit AnalysisRisk FactorsHeart Valve Prosthesis ImplantationRandomized Controlled Trials as TopicMonitoring, AmbulatoryRecurrenceRegistriesSurvival AnalysisHeart Valve ProsthesisProsthesis ImplantationCardiopulmonary ResuscitationCardiac Resynchronization Therapy DevicesInfusion Pumps, ImplantableBioprosthesisElectrocardiography, AmbulatoryAortic Valve StenosisTelemetryElectrophysiologic Techniques, CardiacProsthesis FailureAtrial FibrillationOut-of-Hospital Cardiac ArrestKaplan-Meier EstimateBrugada SyndromeCardiomyopathiesElectromagnetic PhenomenaAortic ValveTachycardia, SupraventricularFeasibility StudiesPrimary PreventionRemote Sensing TechnologyInsulin Infusion SystemsCardiac ElectrophysiologyElectric Stimulation TherapyCardiac CatheterizationDiatomaceous EarthMonitoring, PhysiologicCardiography, ImpedanceHeart-Assist DevicesForeign-Body MigrationCardiomyopathy, DilatedVolunteersDurable Medical EquipmentBlood Glucose Self-MonitoringBlood Vessel ProsthesisCardiovascular AgentsTherapy, Computer-AssistedArrhythmogenic Right Ventricular DysplasiaMagnetsElectric Power SuppliesEmergency Medical ServicesChi-Square DistributionStentsNeural ProsthesesProsthesis-Related InfectionsWhole Blood Coagulation TimeBurns, Electric