PressureBlood PressureBlood VesselsHydrostatic PressureBlood Pressure DeterminationLymphatic VesselsHypertensionRetinal VesselsTransducers, PressureIntracranial PressureIntraocular PressureBlood Pressure Monitoring, AmbulatoryCoronary VesselsAtmospheric PressureAir PressureVenous PressureArterial PressureHeart RateVentricular PressureHemodynamicsVascular ResistanceCentral Venous PressurePulmonary Wedge PressureAntihypertensive AgentsTime FactorsArteriesRegional Blood FlowOsmotic PressureSystoleDogsBlood Flow VelocityEndothelium, VascularPulseAortaDiastoleVasoconstrictionVasodilationManometryCerebrospinal Fluid PressureMicrocirculationRats, Sprague-DawleyModels, CardiovascularDisease Models, AnimalPositive-Pressure RespirationArteriolesCardiac OutputProspective StudiesContinuous Positive Airway PressurePulmonary ArteryNeovascularization, PhysiologicRats, Inbred SHRHypotensionTreatment OutcomeSympathetic Nervous SystemPortal PressureOxygenNeovascularization, PathologicVasodilator AgentsMuscle, Smooth, VascularKidneyLymphatic SystemComplianceVasoconstrictor AgentsHeartNorepinephrineCarotid ArteriesReninPressoreceptorsFollow-Up StudiesCerebrovascular CirculationRabbitsPerfusionRats, WistarVeinsDose-Response Relationship, DrugPulsatile FlowRats, Inbred WKYAnalysis of VarianceCoronary CirculationNitric OxideLower Body Negative PressureFemoral ArteryEndothelial CellsEquipment DesignAngiotensin IIReference ValuesBaroreflexBlood CirculationElasticityRespirationRetinal ArteryPostureStress, MechanicalMesenteric ArteriesCerebral ArteriesCarbon DioxideSwineAorta, ThoracicRespiratory MechanicsPhenylephrine