Central Venous PressureVenous PressureCarotid ArteriesBlood PressureCarotid StenosisPressureCarotid Artery DiseasesHemodynamicsEndarterectomy, CarotidCarotid Artery, InternalPlasma SubstitutesFluid TherapyCardiac OutputBlood VolumeHypovolemiaCarotid Artery, CommonVascular ResistanceBlood Pressure DeterminationCarotid BodyHeart RateLower Body Negative PressureVascular CapacitanceCarotid SinusJugular VeinsMonitoring, IntraoperativeHydroxyethyl Starch DerivativesPulmonary Wedge PressurePortal PressureIntracranial PressureRegional Blood FlowDogsPressoreceptorsIsotonic SolutionsHydrostatic PressureVeinsMonitoring, PhysiologicCarotid Artery, ExternalSympathetic Nervous SystemTransducers, PressureCerebrospinal Fluid PressureHead-Down TiltSupine PositionAnesthesiaHypertension, PortalCapillary ResistanceBaroreflexConstrictionBlood CirculationHypotensionPostureCatheterization, Central VenousAnesthesia, GeneralSplanchnic CirculationPlethysmographyHypertensionIntraoperative CareTime FactorsBlood Loss, SurgicalCarotid Artery ThrombosisReflexProspective StudiesIntra-Abdominal HypertensionCarotid Artery InjuriesHemodilutionOrgan Dysfunction ScoresBlood Flow VelocityVena Cava, InferiorShockBlood Volume DeterminationHepatectomyFemoral VeinColloidsForearmCardiovascular DeconditioningCarotid Intima-Media ThicknessStroke VolumePortal VeinTreatment OutcomeCollateral CirculationIntraocular PressureOxygenPulmonary EdemaRespirationHeartCarbon DioxideCerebrovascular CirculationCardiovascular SystemAnesthesia, EpiduralIntensive CareShock, SepticPulmonary CirculationCardiac Surgical ProceduresAtrial Natriuretic FactorTunica IntimaCardiopulmonary BypassAcid-Base EquilibriumPositive-Pressure RespirationHepatic VeinsPostoperative CareTunica Media