Pacemaker, ArtificialDefibrillators, ImplantableDevice RemovalStaphylococcus lugdunensisCardiac Resynchronization Therapy DevicesProsthesis-Related InfectionsDeath, Sudden, CardiacArrhythmias, CardiacImplantable NeurostimulatorsTachycardia, VentricularEquipment FailureMyocytes, CardiacElectric CountershockVentricular FibrillationProstheses and ImplantsInfusion Pumps, ImplantableCardiac OutputCardiac Pacing, ArtificialElectrodes, ImplantedEquipment DesignCardiac Surgical ProceduresHeartElectrocardiographyEquipment SafetyTreatment OutcomeElectric InjuriesSyncopeHeart FailureHeart ArrestAnti-Arrhythmia AgentsFollow-Up StudiesTelemetryTime FactorsHeart DiseasesEquipment Failure AnalysisCardiomyopathiesCardiac Resynchronization TherapyProsthesis ImplantationRetrospective StudiesAmiodaroneProspective StudiesElectrocardiography, AmbulatoryCardiac CatheterizationElectric Power SuppliesHeart VentriclesHeart-Assist DevicesStroke VolumeElectrophysiologic Techniques, CardiacVentricular Dysfunction, LeftNeural ProsthesesMyocardiumAmplifiers, ElectronicCardiac TamponadeRadio Frequency Identification DeviceCardiomyopathy, DilatedCardiomegalyRisk AssessmentRisk FactorsHeart RateTachycardiaCardiac ElectrophysiologyHeart TransplantationElectromagnetic PhenomenaMyocardial InfarctionMyocardial ContractionMonitoring, AmbulatoryEchocardiographyVentricular Function, LeftPostoperative ComplicationsHeart Conduction SystemCatheters, IndwellingPrimary PreventionHemodynamicsMonitoring, PhysiologicCardiac Output, LowDeath, SuddenOut-of-Hospital Cardiac ArrestMyocardial IschemiaPredictive Value of TestsAtrial FibrillationFeasibility StudiesMyoblasts, CardiacReproducibility of ResultsCardiac Imaging TechniquesHeart Defects, CongenitalSurvival RateRemote Sensing TechnologyTachycardia, SupraventricularRecurrenceBrugada SyndromeCardiac MyosinsSensitivity and SpecificityVentricular DysfunctionWireless TechnologyCardiomyopathy, HypertrophicMiniaturizationKaplan-Meier EstimateCardiac GlycosidesVentricular RemodelingHeart Function Tests