Cardiovascular Physiological PhenomenaDental Physiological PhenomenaDigestive System and Oral Physiological PhenomenaReproductive 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 PhenomenaMyocytes, CardiacVirus Physiological PhenomenaDigestive System Physiological PhenomenaCardiac OutputBlood Physiological PhenomenaHeartArrhythmias, CardiacCardiac Surgical ProceduresAdolescent Nutritional Physiological PhenomenaDeath, Sudden, CardiacOcular Physiological PhenomenaNervous System Physiological PhenomenaCell Physiological PhenomenaRespiratory Physiological PhenomenaSkin Physiological PhenomenaPrenatal Nutritional Physiological PhenomenaPlant Physiological PhenomenaBacterial Physiological PhenomenaCardiac Pacing, ArtificialCardiomegalyCardiac TamponadeHeart DiseasesMyocardiumCardiac CatheterizationMyocardial ContractionMaternal Nutritional Physiological PhenomenaHeart VentriclesHeart ArrestChild Nutritional Physiological PhenomenaTime FactorsNutritional Physiological PhenomenaInfant Nutritional Physiological PhenomenaElectrocardiographyHeart FailureMyoblasts, CardiacCardiomyopathiesCardiac MyosinsCardiac Imaging TechniquesHeart RateCardiac GlycosidesEchocardiographyHemodynamicsCardiac Output, LowMyocardial InfarctionOut-of-Hospital Cardiac ArrestHeart TransplantationCardiac VolumeVentricular RemodelingVentricular Function, LeftTroponin IBlood PressureHeart Defects, CongenitalDogsHeart Conduction SystemStroke VolumeCells, CulturedRats, Sprague-DawleyTreatment OutcomeCardiac Resynchronization TherapyHeart Function TestsCalciumRaynaud DiseaseTroponin TCardiopulmonary ResuscitationHeart NeoplasmsMyocardial IschemiaModels, CardiovascularCardiac Care FacilitiesCardiotonic AgentsVentricular Dysfunction, Left