PressureBlood PressureHydrostatic PressureBlood Pressure DeterminationTransducers, PressureIntraocular PressureHypertensionIntracranial PressureBlood Pressure Monitoring, AmbulatoryVenous PressureAir PressureAtmospheric PressureHeart RateArterial PressureVentricular PressureNeedlesHemodynamicsCentral Venous PressurePulmonary Wedge PressureAntihypertensive AgentsVitrectomyVascular ResistanceOsmotic PressureSystoleDogsTime FactorsEquipment DesignVacuumCerebrospinal Fluid PressureManometryPulseDiastoleRegional Blood FlowPositive-Pressure RespirationContinuous Positive Airway PressureCardiac OutputPortal PressureHypotensionProspective StudiesBlood Flow VelocityPlethysmographySympathetic Nervous SystemPressoreceptorsReninPostureRats, Inbred SHRRespirationLower Body Negative PressureArteriesMicrosurgeryHeartAnalysis of VarianceKidneyTreatment OutcomeOxygenMonitoring, PhysiologicRats, Sprague-DawleyBaroreflexFollow-Up StudiesComplianceHydrocephalus, Normal PressureVitreous HemorrhageRespiratory MechanicsReference ValuesCircadian RhythmReproducibility of ResultsAortaDisease Models, AnimalCarbon DioxideStress, MechanicalTonometry, OcularVasoconstrictionCardiovascular SystemMyocardial ContractionSphygmomanometersRetinal PerforationsNorepinephrineReflexElasticityBiomechanical PhenomenaDose-Response Relationship, DrugForearmModels, CardiovascularPulsatile FlowHypertension, RenalBiopsy, NeedleRats, Inbred WKYAngiotensin IIEpiretinal MembraneDouble-Blind MethodPulmonary ArteryCatheterizationVasodilationTidal VolumeVentricular Function, LeftVasodilator AgentsPerfusionRetrospective StudiesSodium ChlorideIntracranial Hypertension