Heart SeptumHeartSeptum of BrainHeart RateVentricular SeptumSeptum PellucidumAtrial SeptumNasal SeptumHeart FailureHeart DiseasesHeart Defects, CongenitalHeart TransplantationFetal HeartHeart AtriaHeart ValvesMyocardiumHeart BlockEchocardiographyMyocardial ContractionHeart Arrest, InducedHeart Septal DefectsHeart Function TestsHeart Septal Defects, VentricularMyocardial IschemiaTime FactorsHemodynamicsMyocytes, CardiacVentricular Function, LeftPulmonary AtresiaCoronary DiseaseSeptal NucleiCardiomyopathiesCardiomegalyHeart Septal Defects, AtrialCardiac Output, LowCardiomyopathy, DilatedMyocardial InfarctionPerfusionDogsStroke VolumeHeart InjuriesCardiac Pacing, ArtificialEndocardiumVentricular Dysfunction, LeftHypoplastic Left Heart SyndromeHeart, ArtificialHeart Failure, SystolicCardiotonic AgentsRats, Sprague-DawleyRisk FactorsVentricular RemodelingDiagonal Band of BrocaHeart Rate, FetalChitin SynthaseRheumatic Heart DiseaseMyocardial Reperfusion InjuryCardiomyopathy, HypertrophicTreatment OutcomeFollow-Up StudiesHeart ArrestHeart VentriclesAdrenergic beta-AntagonistsProspective StudiesRats, WistarHeart Valve ProsthesisHeart Failure, DiastolicDisease Models, AnimalAmerican Heart AssociationVentricular PressureModels, CardiovascularCardiac Surgical ProceduresSystoleHeart AneurysmEchocardiography, DopplerCell WallAtrioventricular NodeDiastoleChronic DiseaseCardiac Catheterization