Atrial FlutterAtrial FibrillationCatheter AblationHeart AtriaAnti-Arrhythmia AgentsElectrocardiographyElectric CountershockElectrophysiologic Techniques, CardiacPulmonary VeinsCardiac Pacing, ArtificialHeart Conduction SystemVentricular FibrillationPropafenoneAmiodaroneTricuspid ValveAnticoagulantsBody Surface Potential MappingIncidenceAtrial FunctionAtrial AppendageWarfarinHeart BlockTreatment OutcomeProcainamidePericarditisRefractory Period, ElectrophysiologicalFlecainideTachycardia, ParoxysmalAtrial Premature ComplexesFollow-Up StudiesAtrial Function, RightArrhythmias, CardiacTachycardia, SupraventricularRecurrenceAtrial Function, LeftTachycardiaProspective StudiesElectrocardiography, AmbulatoryTime FactorsThromboembolismCryosurgeryDisopyramideAtrioventricular NodeTachycardia, Ectopic AtrialCardiac Surgical ProceduresSick Sinus SyndromeSotalolRisk FactorsPacemaker, ArtificialEchocardiography, TransesophagealStrokeHeart RateHeart DiseasesDogsMyocytes, CardiacRetrospective StudiesVena Cava, InferiorEchocardiographyElectrophysiologyDigoxinPostoperative ComplicationsWolff-Parkinson-White SyndromeArrhythmia, SinusEmbolismHeartCoronary SinusAtrial SeptumCardiac Catheterizationbeta-AlanineFluoroscopyCardiac CathetersRisk AssessmentInternational Normalized RatioChronic DiseaseHeart FailurePredictive Value of TestsSinoatrial NodeBundle of HisHydrops FetalisCardiac OutputDeath, Sudden, CardiacDefibrillators, ImplantableBepridilTachycardia, VentricularMitral ValveHemorrhageEndocardiumHeart VentriclesBradycardiaChi-Square DistributionSurgery, Computer-AssistedEquipment DesignAction PotentialsTachycardia, Sinoatrial Nodal ReentryPericardiumHeart Valve DiseasesAtrioventricular BlockHeart ArrestPrognosisTachycardia, Atrioventricular Nodal Reentry