HeartMammalsHeart RateHeart FailureHeart DiseasesHeart TransplantationHeart Defects, CongenitalFetal HeartHeart ValvesHeart AtriaHeart BlockMyocardiumMolecular Sequence DataTime FactorsHeart Arrest, InducedHeart Function TestsMyocardial ContractionSpecies SpecificityMyocardial IschemiaDogsMyocytes, CardiacHemodynamicsPhylogenyCoronary DiseaseAmino Acid SequenceDisease Models, AnimalVentricular Function, LeftBiological EvolutionCardiac Output, LowBase SequenceMarsupialiaPerfusionHeart, ArtificialEvolution, MolecularCardiomyopathy, DilatedHeart Failure, SystolicCardiomegalyMyocardial InfarctionRisk FactorsHeart InjuriesRodentiaStroke VolumeCardiotonic AgentsPlacental LactogenCardiomyopathiesHeart SeptumRats, Sprague-DawleyRNA, MessengerOxygen ConsumptionHeart Rate, FetalMyocardial Reperfusion InjuryRheumatic Heart DiseaseMice, Inbred C57BLHeart ArrestTensile StrengthAdrenergic beta-AntagonistsVentricular Dysfunction, LeftRats, WistarRabbitsModels, BiologicalSympathetic Nervous SystemHeart Failure, DiastolicBirdsReptilesAmerican Heart AssociationGene Expression Regulation, DevelopmentalVentricular RemodelingMice, KnockoutAgingAutonomic Nervous SystemProspective StudiesDose-Response Relationship, DrugSignal TransductionEnergy MetabolismChronic DiseaseGene Expression RegulationSequence Homology, Amino AcidPinnipediaMutationFollow-Up StudiesCetaceaCardiac Pacing, ArtificialPhenotypeTissue DistributionBiological MarkersModels, AnimalSequence AlignmentMuscle, SkeletalHeart Septal DefectsExercise TestFossilsTreatment OutcomeModels, CardiovascularShrewsZebrafishHypoplastic Left Heart SyndromeHeart NeoplasmsLeft-Right Determination FactorsNatriuretic Peptide, BrainVentricular Pressure