Blood PressurePressureBlood Pressure DeterminationHypertensionBlood Pressure Monitoring, AmbulatoryDiastoleHeart RateAntihypertensive AgentsHydrostatic PressureSystoleHemodynamicsVentricular PressureBlood Pressure MonitorsPulseVascular ResistanceIntracranial PressureTransducers, PressureIntraocular PressureReninTime FactorsDogsHypotensionArterial PressureCardiac OutputAtmospheric PressureAir PressureVenous PressureHeartSphygmomanometersSympathetic Nervous SystemBaroreflexPulmonary Wedge PressureMyocardial ContractionBlood Flow VelocityVentricular Function, LeftMethyldopaPressoreceptorsArteriesProspective StudiesRegional Blood FlowPerinephritisRats, Inbred SHRCircadian RhythmCardiovascular DiseasesPostureAngiotensin-Converting Enzyme InhibitorsAortaComplianceDouble-Blind MethodAtenololHypertrophy, Left VentricularHeart VentriclesBody WeightCentral Venous PressureFollow-Up StudiesCoronary CirculationNorepinephrineAnalysis of VarianceAngiotensin IIRegression AnalysisPulsatile FlowElectrocardiographyMyocardiumMonitoring, PhysiologicManometryAge FactorsReference ValuesEchocardiographyHydrochlorothiazideKidneyRats, Sprague-DawleyBody Mass IndexRisk FactorsCardiac CatheterizationDose-Response Relationship, DrugModels, CardiovascularRandom AllocationCoronary DiseaseRespirationSex FactorsCardiovascular SystemCross-Sectional StudiesHypertension, RenalHeart FailureAfrican Continental Ancestry GroupPulmonary ArteryAdrenergic beta-AntagonistsDiureticsValsalva ManeuverSodium Chloride, DietaryEnalaprilSodiumBlood VolumeAgingRats, Inbred WKYCaptoprilElasticityPhysical ExertionVentricular FunctionTreatment Outcome