Spinal CordAnesthesia, GeneralAnesthesiaAnesthesia, SpinalAnesthesia, LocalSpinal Cord InjuriesAnesthesia, EpiduralAnesthesia, InhalationAnesthesia, ConductionAnesthesia, IntravenousAnesthesia, ObstetricalAnesthesia Recovery PeriodAnesthesia, DentalInjections, SpinalAnesthetics, InhalationAnesthetics, IntravenousAdjuvants, AnesthesiaPropofolAnesthetics, LocalSpinal NervesSpinal Cord DiseasesIsofluraneMethyl EthersAnesthesiologyAnesthetics, CombinedSpinal Nerve RootsMonitoring, IntraoperativeSpinal Cord NeoplasmsSpinal CanalNitrous OxideSpinal DiseasesSpinal Cord CompressionAnestheticsSpinal NeoplasmsLidocaineHalothaneSpinal StenosisBupivacaineSpinal FusionFentanylAnesthesia, Closed-CircuitNerve BlockAnesthetics, GeneralKetamineAmbulatory Surgical ProceduresPreanesthetic MedicationSpinal InjuriesThiopentalAnesthesia, CaudalMuscular Atrophy, SpinalSpinal Cord IschemiaPentobarbitalAnesthetics, DissociativeGanglia, SpinalEnfluraneXylazineIntraoperative ComplicationsIntubation, IntratrachealPain, PostoperativeConscious SedationAnesthesia Department, HospitalPain MeasurementThoracic VertebraeSpineMotor NeuronsCesarean SectionAnesthesia, IntratrachealParaplegiaIntraoperative PeriodLaminectomyRats, Sprague-DawleyTime FactorsTuberculosis, SpinalLumbosacral RegionPrilocainePainAnesthesia and AnalgesiaHematoma, Epidural, SpinalMethohexitalAnalgesics, OpioidSpinal CurvaturesLumbar VertebraePosterior Horn CellsCervical VertebraeElectroencephalographyProspective StudiesMepivacaineAlfentanilHypnotics and SedativesConsciousnessPostoperative ComplicationsSurgical Procedures, MinorSpinal Muscular Atrophies of ChildhoodMidazolamPostoperative Nausea and VomitingHemodynamicsXenonSufentanilDouble-Blind MethodReflex