Cerebrospinal FluidSpinal CordAnesthesia, GeneralAnesthesiaAnesthesia, SpinalAnesthesia, LocalSpinal Cord InjuriesCerebrospinal Fluid ProteinsAnesthesia, EpiduralAnesthesia, InhalationAnesthesia, ConductionAnesthesia, IntravenousAnesthesia, ObstetricalAnesthesia Recovery PeriodCerebrospinal Fluid RhinorrheaAnesthesia, DentalInjections, SpinalCerebrospinal Fluid PressureAnesthetics, InhalationAnesthetics, IntravenousCerebrospinal Fluid ShuntsMeningitisAdjuvants, AnesthesiaSpinal Cord DiseasesAnesthetics, LocalPropofolSpinal PunctureSpinal NervesIsofluraneMethyl EthersSpinal Nerve RootsAnesthesiologySpinal Cord NeoplasmsAnesthetics, CombinedSpinal CanalMonitoring, IntraoperativeSpinal Cord CompressionSpinal DiseasesNitrous OxideAnestheticsSpinal NeoplasmsLidocaineHalothaneBupivacaineSpinal StenosisSpinal FusionCerebrospinal Fluid OtorrheaFentanylMeningitis, BacterialMeningitis, ViralSubarachnoid SpaceSpinal Cord IschemiaHydrocephalusAnesthesia, Closed-CircuitNerve BlockAnesthetics, GeneralMeningitis, AsepticKetamineThiopentalTuberculosis, MeningealAmbulatory Surgical ProceduresPreanesthetic MedicationSpinal InjuriesAnesthesia, CaudalTime FactorsMuscular Atrophy, SpinalBrainPentobarbitalParaplegiaMeningitis, PneumococcalEnfluraneRats, Sprague-DawleyLumbosacral RegionAnesthetics, DissociativeIntraoperative ComplicationsGanglia, SpinalPain, PostoperativeThoracic VertebraeSpineChoroid PlexusXylazineIntracranial PressurePain MeasurementIntubation, IntratrachealMotor NeuronsMagnetic Resonance ImagingConscious SedationAnesthesia Department, HospitalLaminectomyCisterna MagnaMeningoencephalitisCesarean SectionArachnoidProspective StudiesAnesthesia, IntratrachealNervous System DiseasesPostoperative ComplicationsElectroencephalographyPainNeurosyphilis