Jejunoileal BypassHyperlipidemiasAtrial FibrillationCatheter AblationHeart AtriaHypertensionVentricular FibrillationAnti-Arrhythmia AgentsPulmonary VeinsElectric CountershockWarfarinAtrial FlutterAnticoagulantsElectrocardiographyHypertension, PulmonaryElectrophysiologic Techniques, CardiacAtrial AppendageAmiodaroneCardiac Pacing, ArtificialHeart Conduction SystemTreatment OutcomeRisk FactorsFollow-Up StudiesStrokeThromboembolismRefractory Period, ElectrophysiologicalAtrial Function, LeftTachycardia, ParoxysmalAtrial FunctionRecurrenceProspective StudiesTime FactorsAtrial Premature ComplexesElectrocardiography, AmbulatoryPropafenoneKeratosisBlood PressureHeart Ratebeta-AlanineSotalolFlecainidePacemaker, ArtificialHypertension, RenalHypertension, PortalAtrioventricular NodeSick Sinus SyndromeEmbolismChronic DiseaseInternational Normalized RatioEchocardiography, TransesophagealRetrospective StudiesRisk AssessmentAntihypertensive AgentsIncidenceCryosurgeryArrhythmias, CardiacWolff-Parkinson-White SyndromeTachycardiaBepridilHypertension, RenovascularDigoxinDogsHemorrhagePredictive Value of TestsTachycardia, Ectopic AtrialCardiac Surgical ProceduresHeart FailurePrevalenceAtrial Function, RightArrhythmia, SinusPostoperative ComplicationsTachycardia, SupraventricularHeart DiseasesHypertension, MalignantCohort StudiesAge FactorsAtrial SeptumComorbidityHeart Valve DiseasesSinoatrial NodeBradycardiaMitral ValveCerebrovascular DisordersAspirinDefibrillators, ImplantableMultivariate AnalysisChi-Square DistributionAdrenergic beta-AntagonistsPrognosisPericardiumSeverity of Illness IndexBenzimidazolesLogistic ModelsProcainamideFibrinolytic AgentsHemodynamicsCase-Control StudiesAtrial RemodelingModels, CardiovascularElectrophysiology