PressureBlood PressureTransducersHydrostatic PressureTransducers, PressureBlood Pressure DeterminationHypertensionIntracranial PressureIntraocular PressureBlood Pressure Monitoring, AmbulatoryAtmospheric PressureAir PressureVenous PressureSTAT3 Transcription FactorArterial PressureHeart RateVentricular PressureReproducibility of ResultsHemodynamicsCentral Venous PressureSensitivity and SpecificityPulmonary Wedge PressureAntihypertensive AgentsTime FactorsOsmotic PressureSystoleVascular ResistanceEquipment DesignDogsAlgorithmsDiastoleManometryPulseSTAT1 Transcription FactorProspective StudiesSignal TransductionCerebrospinal Fluid PressurePositive-Pressure RespirationCardiac OutputRegional Blood FlowBlood Flow VelocityPredictive Value of TestsContinuous Positive Airway PressureUltrasonographyPortal PressureHypotensionMonitoring, PhysiologicSTAT5 Transcription FactorAnalysis of VarianceSympathetic Nervous SystemRats, Sprague-DawleyKidneyTrans-ActivatorsUltrasonicsPressoreceptorsOxygenHeartReninPostureRats, Inbred SHRReference ValuesRespirationModels, BiologicalLower Body Negative PressureArteriesComplianceBaroreflexAortaTreatment OutcomeAcousticsTonometry, OcularDisease Models, AnimalDose-Response Relationship, DrugSensory RhodopsinsModels, CardiovascularRespiratory MechanicsComputer SimulationHydrocephalus, Normal PressureSphygmomanometersFollow-Up StudiesCircadian RhythmElasticityRegression AnalysisROC CurveCarbon DioxidePulsatile FlowLinear ModelsPhantoms, ImagingEquipment Failure AnalysisNorepinephrineVentricular Function, LeftPulmonary ArteryCalibrationBody WeightIntracranial HypertensionReflexEchocardiographyAngiotensin IITelemetryCardiovascular System