Cardiovascular Physiological PhenomenaDental Physiological PhenomenaDigestive System and Oral Physiological PhenomenaArrhythmias, CardiacReproductive and Urinary Physiological PhenomenaMusculoskeletal and Neural Physiological PhenomenaCirculatory and Respiratory Physiological PhenomenaIntegumentary System Physiological PhenomenaSports Nutritional Physiological PhenomenaReproductive Physiological PhenomenaPhysiological PhenomenaElder Nutritional Physiological PhenomenaUrinary Tract Physiological PhenomenaMusculoskeletal Physiological PhenomenaArrhythmia, SinusMyocytes, CardiacVirus Physiological PhenomenaElectrocardiographyHeartDeath, Sudden, CardiacDigestive System Physiological PhenomenaCardiac OutputTachycardia, VentricularAnti-Arrhythmia AgentsBlood Physiological PhenomenaVentricular FibrillationCardiac Surgical ProceduresCardiac Pacing, ArtificialHeart Conduction SystemHeart VentriclesHeart RateMyocardiumVentricular Premature ComplexesAdolescent Nutritional Physiological PhenomenaOcular Physiological PhenomenaTachycardiaElectrocardiography, AmbulatoryNervous System Physiological PhenomenaHeart DiseasesTime FactorsLong QT SyndromeRespiratory Physiological PhenomenaCardiac Complexes, PrematureMyocardial ContractionCell Physiological PhenomenaAtrial FibrillationSkin Physiological PhenomenaPrenatal Nutritional Physiological PhenomenaCardiomegalyDogsHeart ArrestPlant Physiological PhenomenaElectrophysiologic Techniques, CardiacMyocardial InfarctionCardiomyopathiesDefibrillators, ImplantableHeart FailureCardiac CatheterizationBacterial Physiological PhenomenaHeart AtriaCardiac TamponadeMyocardial IschemiaModels, CardiovascularTachycardia, SupraventricularEchocardiographyVentricular DysfunctionCatheter AblationAction PotentialsAtrial FlutterNAV1.5 Voltage-Gated Sodium ChannelHemodynamicsElectric CountershockMaternal Nutritional Physiological PhenomenaTreatment OutcomeCardiac ElectrophysiologyVentricular Function, LeftBradycardiaMyocardial Reperfusion InjuryCardiac Imaging TechniquesChild Nutritional Physiological PhenomenaFlecainideFollow-Up StudiesBlood PressureCardiomyopathy, DilatedDisease Models, AnimalHeart Defects, CongenitalTorsades de PointesAmiodaroneMyoblasts, CardiacNutritional Physiological PhenomenaStroke VolumePericardiumProspective StudiesCardiac GlycosidesCardiac Output, LowVentricular FunctionVentricular RemodelingElectrophysiologyPacemaker, ArtificialDeath, Sudden