Myocytes, CardiacCardiac OutputHeartArrhythmias, CardiacCardiac Surgical ProceduresDeath, Sudden, CardiacReproducibility of ResultsSensitivity and SpecificityMyocardiumCardiomegalyCardiac Pacing, ArtificialHeart DiseasesCardiac TamponadeCardiac CatheterizationMyocardial ContractionHeart VentriclesTime FactorsHeart ArrestTandem Mass SpectrometryCardiomyopathiesCardiac Imaging TechniquesHeart FailureElectrocardiographyMyoblasts, CardiacChromatography, LiquidEchocardiographyCardiac MyosinsReference StandardsHeart RateLimit of DetectionHemodynamicsCardiac GlycosidesCalibrationVentricular Function, LeftMyocardial InfarctionCardiac VolumeCardiac Output, LowOut-of-Hospital Cardiac ArrestHeart TransplantationVentricular RemodelingTroponin IDogsChromatography, High Pressure LiquidStroke VolumeAlgorithmsModels, CardiovascularMass SpectrometryImage Processing, Computer-AssistedHeart Defects, CongenitalImage Interpretation, Computer-AssistedRats, Sprague-DawleyPolymerase Chain ReactionBlood PressureDisease Models, AnimalHeart Function TestsVentricular Dysfunction, LeftTreatment OutcomeProspective StudiesMyocardial IschemiaCardiac Resynchronization TherapyMagnetic Resonance Imaging, CineMagnetic Resonance ImagingCells, CulturedHeart Conduction SystemBiological MarkersCardiomyopathy, DilatedTroponin TFibrosisCardiotonic AgentsCardiopulmonary ResuscitationPredictive Value of TestsHeart NeoplasmsCardiac Care FacilitiesRNA, MessengerImaging, Three-DimensionalCardiac ElectrophysiologyVentricular FunctionHeart AtriaCalciumIsotope LabelingReverse Transcriptase Polymerase Chain ReactionCoronary CirculationFetal HeartMice, Inbred C57BLRats, WistarRetrospective StudiesFollow-Up StudiesMice, TransgenicHeart InjuriesTomography, Emission-Computed, Single-PhotonContrast MediaProteomicsReal-Time Polymerase Chain ReactionMolecular Sequence DataImage EnhancementSpectrometry, Mass, Electrospray IonizationRisk FactorsAutomationCardiopulmonary BypassReference Values