Blood PressurePressureHeart RateHypertensionBlood Pressure DeterminationArterial PressureHemodynamicsBlood Pressure Monitoring, AmbulatoryVascular ResistanceHypotensionHydrostatic PressureAntihypertensive AgentsSympathetic Nervous SystemRegional Blood FlowIntracranial PressureBaroreflexCardiac OutputPressoreceptorsBlood Pressure MonitorsCardiovascular SystemDogsBlood Gas AnalysisKidneyBlood Flow VelocityReninRats, Inbred SHRSystoleTime FactorsCerebrovascular CirculationCentral Venous PressureArteriesIntraocular PressureAnesthesiaVenous PressureCarbon DioxideRats, Sprague-DawleyReflexRenal CirculationNorepinephrineRespirationPhenylephrinePulseAngiotensin IITransducers, PressureCardiovascular Physiological PhenomenaOxygenVasoconstrictor AgentsRats, Inbred WKYDiastoleCarotid SinusHypertension, RenalTelemetryVasoconstrictionSodium Chloride, DietaryDose-Response Relationship, DrugAtmospheric PressureLower Body Negative PressureBlood VolumeDenervationRats, WistarNatriuresisVentricular PressureAir PressureVasodilationMonitoring, PhysiologicAutonomic Nervous SystemVasodilator AgentsAnalysis of VarianceRenin-Angiotensin SystemMedulla OblongataShock, HemorrhagicNitroprussideProspective StudiesNitric OxideNG-Nitroarginine Methyl EsterHeartPulmonary Wedge PressureGanglionic BlockersSodium, DietaryConsciousnessPostureDiet, Sodium-RestrictedBlood CirculationHypotension, ControlledAortaAngiotensin-Converting Enzyme InhibitorsCaptoprilSplanchnic CirculationTrimethaphanHomeostasisHematocritCircadian RhythmSodium ChlorideReference ValuesEpinephrineDisease Models, AnimalCatsLaser-Doppler FlowmetryOxygen ConsumptionSphygmomanometers