HemodynamicsReference StandardsReference ValuesVascular ResistanceRenal CirculationBlood PressureBlood Flow VelocityCardiac OutputRegional Blood FlowCerebrovascular CirculationModels, CardiovascularDogsPulmonary CirculationHeart RateKidneyHypertension, PulmonaryBlood VolumePulsatile FlowTime FactorsReproducibility of ResultsGlomerular Filtration RateLiver CirculationCoronary CirculationPulmonary Wedge PressureSensitivity and SpecificityCardiography, ImpedancePulmonary ArterySplanchnic CirculationOxygenOxygen ConsumptionVentricular Function, LeftBlood Gas AnalysisHypertension, PortalMicrocirculationSwineUltrasonography, Doppler, TranscranialSpectroscopy, Near-InfraredStroke VolumeArteriesHypertensionProspective StudiesHematocritVasodilator AgentsHeart FailureArterial PressureVenous PressureDisease Models, AnimalTreatment OutcomeBlood CirculationDiuresisRats, Sprague-DawleyNatriuresisAlgorithmsPulmonary Gas ExchangeLaser-Doppler FlowmetryAntihypertensive AgentsHeartCardiac CatheterizationPortal VeinAnesthesiaNitric OxideIntracranial AneurysmRenal Plasma FlowReninComputer SimulationMagnetic Resonance AngiographyUltrasonography, Doppler, ColorUltrasonography, DopplerCatheterization, Swan-GanzKidney GlomerulusCerebral ArteriesVeinsHemorheologyHeart VentriclesResuscitationCarbon DioxideMiddle Cerebral ArteryAnalysis of VarianceSulfonesMyocardiumMagnetic Resonance ImagingShock, HemorrhagicHydrodynamicsStress, MechanicalLungImaging, Three-DimensionalIsofluraneAcetazolamideEchocardiographyRenal ArteryShear StrengthNorepinephrineMyocardial ContractionOxyhemoglobinsDose-Response Relationship, DrugSheepPortal SystemVasodilationBrainVentricular Function, Right