PressureBlood PressureConstrictionHydrostatic PressureVasoconstrictionConstriction, PathologicBlood Pressure DeterminationHypertensionArteriolesTransducers, PressureIntracranial PressureIntraocular PressureBlood Pressure Monitoring, AmbulatoryVenous PressureAir PressureAtmospheric PressureVentricular PressureHemodynamicsHeart RateVascular ResistanceVasoconstrictor AgentsDogsArterial PressureDuctus ArteriosusVasodilationRats, Sprague-DawleyAntihypertensive AgentsRegional Blood FlowTime FactorsCentral Venous PressureCardiomegalyPulmonary Wedge PressureArteriesReflex, PupillarySystoleNorepinephrinePupilPhenylephrineBronchoconstrictionMuscle TonusMuscle, Smooth, VascularOsmotic PressureBlood Flow VelocityAmniotic Band SyndromeDose-Response Relationship, DrugDiastoleDisease Models, AnimalVasomotor SystemSympathetic Nervous SystemAortaMesenteric ArteriesPulmonary ArteryPerfusionMicrocirculationVasodilator AgentsRats, WistarCerebral ArteriesAngiotensin IIPia MaterPericarditis, ConstrictiveManometryNitric OxideCoronary VesselsPulseHeartCardiac OutputKidneyAirway ResistanceRats, Inbred SHREndothelin-1Cerebrospinal Fluid PressureOxygenEndothelium, Vascular15-Hydroxy-11 alpha,9 alpha-(epoxymethano)prosta-5,13-dienoic AcidMyocardiumHypertrophy, Left VentricularHypotensionCoronary CirculationReninPositive-Pressure RespirationRespiratory MechanicsContinuous Positive Airway PressureHyperesthesiaMuscle ContractionPortal PressureCerebrovascular CirculationPressoreceptorsRabbitsReflexRats, Inbred WKYAcetylcholineAdrenergic alpha-AgonistsMyocardial ContractionAnalysis of VarianceRespirationSciatic NeuropathyIndomethacinHypertension, RenalEnzyme InhibitorsNG-Nitroarginine Methyl Ester