NifedipineBlood PressurePressureBlood Pressure DeterminationHypertensionBlood Pressure Monitoring, AmbulatoryCalcium Channel BlockersHeart RateAntihypertensive AgentsHydrostatic PressureSystoleBlood Pressure MonitorsHemodynamicsRats, Inbred SHRHypotensionDiastoleVascular ResistanceReninPulseTime FactorsIntracranial PressureIntraocular PressureArterial PressureTransducers, PressureDiltiazemSympathetic Nervous SystemKidneyVerapamilAtenololNorepinephrineDouble-Blind MethodCircadian RhythmRats, Inbred WKYVenous PressureDihydropyridinesDose-Response Relationship, DrugAtmospheric PressureAngiotensin-Converting Enzyme InhibitorsHypertension, RenalAir PressureSphygmomanometersRegional Blood FlowCardiovascular DiseasesProspective StudiesVasodilator AgentsAngiotensin IIRats, Sprague-DawleyCardiovascular SystemBaroreflexCalciumSodium Chloride, DietaryAmlodipineRisk FactorsBody WeightDogsCardiac OutputDiet, Sodium-RestrictedArteriesSodium, DietaryRenin-Angiotensin SystemVentricular PressureHydrochlorothiazideVasoconstrictionBody Mass IndexFollow-Up StudiesSodiumNicardipinePressoreceptorsAnalysis of VarianceCaptoprilVasoconstrictor AgentsCentral Venous PressureAldosteroneRats, WistarAortaRenal CirculationReference ValuesDelayed-Action PreparationsPhenylephrineHeartCross-Sectional StudiesCross-Over StudiesCalcium Channels, L-TypePotassiumBlood Flow VelocityEnalaprilPostureRegression AnalysisDiureticsHypertrophy, Left VentricularAutonomic Nervous SystemComplianceTelemetryVasodilationCardiovascular Physiological PhenomenaAge FactorsTreatment OutcomeFelodipineAdrenergic beta-AntagonistsPulmonary Wedge Pressure