Spinal CordAnesthesia, GeneralAnesthesiaAnesthesia, SpinalAnesthesia, LocalSpinal Cord InjuriesAnesthesia, EpiduralAnesthesia, ConductionAnesthesia, InhalationAnesthesia, IntravenousAnesthesia, ObstetricalAnesthesia Recovery PeriodAnesthesia, DentalInjections, SpinalAnesthetics, IntravenousAnesthetics, InhalationAdjuvants, AnesthesiaPropofolAnesthetics, LocalSpinal NervesIsofluraneSpinal Cord DiseasesAnesthesiologyMethyl EthersMonitoring, IntraoperativeAnesthetics, CombinedSpinal Nerve RootsSpinal Cord NeoplasmsSpinal CanalSpinal DiseasesNitrous OxideAnestheticsSpinal Cord CompressionSpinal NeoplasmsLidocaineHalothaneAmbulatory Surgical ProceduresSpinal FusionSpinal StenosisBupivacaineFentanylNerve BlockAnesthesia, Closed-CircuitAnesthetics, GeneralKetaminePreanesthetic MedicationTime FactorsSpinal InjuriesThiopentalAnesthesia, CaudalIntraoperative ComplicationsMuscular Atrophy, SpinalSurgical Procedures, OperativeConscious SedationPostoperative ComplicationsSpinal Cord IschemiaPentobarbitalPain MeasurementTreatment OutcomePain, PostoperativeAnesthetics, DissociativeIntubation, IntratrachealGanglia, SpinalEnfluraneSpineXylazineThoracic VertebraeProspective StudiesAnesthesia Department, HospitalCesarean SectionIntraoperative PeriodMotor NeuronsAnesthesia, IntratrachealParaplegiaLaminectomyPainRats, Sprague-DawleyLumbosacral RegionPrilocaineSurgical Procedures, MinorTuberculosis, SpinalLumbar VertebraeCervical VertebraeRetrospective StudiesAnalgesics, OpioidOrthopedic ProceduresAnesthesia and AnalgesiaMethohexitalHypnotics and SedativesHematoma, Epidural, SpinalSpinal CurvaturesElectroencephalographyPosterior Horn CellsAlfentanilMepivacaineMidazolamConsciousnessHemodynamicsAnalgesiaDouble-Blind Method