Atrial FlutterAtrial FibrillationCatheter AblationHeart AtriaAnti-Arrhythmia AgentsElectric CountershockElectrocardiographyCardiac Pacing, ArtificialChronic DiseaseAmiodaronePulmonary VeinsElectrophysiologic Techniques, CardiacTachycardiaPropafenoneHeart Conduction SystemAtrial AppendageVentricular FibrillationWarfarinAtrial FunctionTachycardia, SupraventricularAnticoagulantsAtrial Function, LeftRefractory Period, ElectrophysiologicalTachycardia, ParoxysmalTachycardia, VentricularSotalolAtrioventricular NodeTreatment OutcomeTachycardia, Ectopic AtrialFollow-Up StudiesPacemaker, ArtificialRecurrenceElectrocardiography, AmbulatoryTricuspid ValveCryosurgeryDigoxinSick Sinus SyndromeBody Surface Potential MappingArrhythmias, CardiacArrhythmia, SinusProcainamideHeart BlockThromboembolismPericarditisHeart Valve DiseasesFlecainideTime FactorsAtrial Premature ComplexesProspective StudiesEchocardiography, TransesophagealDefibrillators, ImplantableHeart RateAtrial Function, RightBundle of HisMitral ValveElectrophysiologyCardiac Surgical ProceduresDogsRetrospective StudiesStrokeRisk FactorsDisopyramideEchocardiographyHeart DiseasesBradycardiaHeart FailureAction PotentialsVena Cava, InferiorPostoperative ComplicationsPredictive Value of TestsDeath, Sudden, CardiacWolff-Parkinson-White SyndromeEmbolismHeart VentriclesCoronary SinusAtrial Septumbeta-AlanineFluoroscopyFetal DiseasesRisk AssessmentMitral Valve StenosisCardiac CathetersEchocardiography, DopplerInternational Normalized RatioIncidenceThrombosisSinoatrial NodeHydrops FetalisHeart Valve Prosthesis ImplantationBepridilCardiac CatheterizationStroke VolumeSurgery, Computer-AssistedHemorrhageTachycardia, Sinoatrial Nodal ReentryHeartMitral Valve InsufficiencyEquipment DesignEndocardiumTachycardia, Atrioventricular Nodal Reentry