HeartMyocytes, CardiacMyocardiumCardiac OutputArrhythmias, CardiacFetal HeartMyocardial ContractionCardiomegalyHeart Defects, CongenitalHeart VentriclesCardiomyopathy, DilatedCardiomyopathiesHeart DiseasesEchocardiographyHemodynamicsHeart FailureTroponin ICardiac Surgical ProceduresMice, KnockoutElectrocardiographyVentricular FunctionDeath, Sudden, CardiacHeart Conduction SystemHeart RateModels, CardiovascularVentricular RemodelingMice, TransgenicSarcomeresVentricular Function, LeftStroke VolumeBlood PressureTime FactorsFibrosisMuscle ProteinsMice, Inbred C57BLCardiac TamponadeCardiac Pacing, ArtificialUltrasonography, PrenatalDogsCalciumCardiac CatheterizationDiastolePhenotypeDisease Models, AnimalGene Expression Regulation, DevelopmentalHeart ArrestCells, CulturedPregnancyMyoblasts, CardiacGestational AgeCardiac MyosinsCardiac Imaging TechniquesSarcoplasmic ReticulumCardiac GlycosidesMutationSignal TransductionCardiac Output, LowOut-of-Hospital Cardiac ArrestRNA, MessengerMyocardial InfarctionCardiac VolumeHeart TransplantationPhosphorylationTranscription FactorsMolecular Sequence DataCardiac Resynchronization TherapyHeart Function TestsTroponin TCardiopulmonary ResuscitationHeart NeoplasmsCardiac Care FacilitiesVentricular Dysfunction, LeftCardiotonic AgentsMyocardial IschemiaTreatment OutcomeCardiac ElectrophysiologyRats, Sprague-DawleyHeart AtriaProspective StudiesHeart InjuriesCardiopulmonary BypassTroponinHypertrophy, Left VentricularFollow-Up StudiesMyocarditisIsoproterenolAtrial Natriuretic FactorRetrospective StudiesRisk FactorsMitochondria, HeartHeart ValvesPericardiumPredictive Value of TestsRats, WistarPacemaker, ArtificialEdema, CardiacBiological MarkersMagnetic Resonance Imaging, CinePostoperative ComplicationsVentricular Fibrillation