MicrovesselsMicrocirculationCoronary VesselsEndothelium, VascularEndothelial CellsCells, CulturedMyocardiumRats, Sprague-DawleyMyocytes, CardiacCardiac OutputHeartCapillary PermeabilityArrhythmias, CardiacCardiac Surgical ProceduresDeath, Sudden, CardiacCapillariesMicrovascular AnginaCardiomegalyCardiac Pacing, ArtificialHeart DiseasesCardiac TamponadeCoronary CirculationCardiac CatheterizationMyocardial ContractionTime FactorsHeart VentriclesHemodynamicsVenulesHeart ArrestArteriolesBlood PressureMyocardial InfarctionElectrocardiographyEchocardiographyCardiomyopathiesHeart FailureCardiac Imaging TechniquesHeart RateMyoblasts, CardiacDisease Models, AnimalRetinal VesselsCardiac MyosinsRegional Blood FlowVentricular RemodelingBlood Flow VelocityModels, CardiovascularCardiac GlycosidesDogsVentricular Function, LeftHeart TransplantationDiabetic AngiopathiesCardiac Output, LowLaser-Doppler FlowmetryOut-of-Hospital Cardiac ArrestVascular ResistanceSkinCardiac VolumeTreatment OutcomeMyocardial IschemiaMice, Inbred C57BLTroponin IMicrovascular Decompression SurgeryPericytesStroke VolumeNeovascularization, PhysiologicVasodilator AgentsRats, WistarHeart Function TestsFibrosisOxygenProspective StudiesPulmonary CirculationMicrosurgeryHyperemiaHeart Defects, CongenitalLungVentricular Dysfunction, LeftSignal TransductionNitric OxideCardiotonic AgentsTroponin TVasodilationTrigeminal NeuralgiaVascular Endothelial Growth Factor ARNA, MessengerNeovascularization, PathologicCardiomyopathy, DilatedCardiac Resynchronization TherapyBlood-Brain BarrierCalciumRisk FactorsCorrosion CastingHeart Conduction SystemCardiopulmonary ResuscitationDiabetic RetinopathyBiological MarkersHeart NeoplasmsCardiac Care FacilitiesMuscle, SkeletalFollow-Up Studies