Spinal CordSleep Apnea, ObstructiveAnesthesia, GeneralAnesthesiaSleep Apnea SyndromesAnesthesia, SpinalAnesthesia, LocalSpinal Cord InjuriesAnesthesia, EpiduralAnesthesia, InhalationAnesthesia, ConductionAnesthesia, IntravenousSleep Apnea, CentralAnesthesia, ObstetricalPolysomnographyAnesthesia Recovery PeriodAnesthesia, DentalAnesthetics, IntravenousInjections, SpinalAnesthetics, InhalationAdjuvants, AnesthesiaPropofolAnesthetics, LocalSpinal NervesMethyl EthersSpinal Cord DiseasesIsofluraneAnesthesiologyContinuous Positive Airway PressureAnesthetics, CombinedSpinal Nerve RootsMonitoring, IntraoperativeSpinal Cord NeoplasmsSpinal CanalSpinal Cord CompressionNitrous OxideSpinal DiseasesAnestheticsSnoringSpinal NeoplasmsLidocaineHalothaneRespirationFentanylSpinal StenosisBupivacaineSpinal FusionAnesthesia, Closed-CircuitPreanesthetic MedicationNerve BlockKetamineAnesthetics, GeneralAmbulatory Surgical ProceduresThiopentalSpinal InjuriesAnesthesia, CaudalPalate, SoftMuscular Atrophy, SpinalTime FactorsPharynxProspective StudiesIntubation, IntratrachealSpinal Cord IschemiaPentobarbitalSleepConscious SedationAnesthetics, DissociativeGanglia, SpinalElectroencephalographyUvulaIntraoperative ComplicationsOxygenHeart RateEnfluranePain, PostoperativeMandibular AdvancementXylazineRespiratory MechanicsMotor NeuronsPositive-Pressure RespirationPain MeasurementAnesthesia Department, HospitalThoracic VertebraeSpineRats, Sprague-DawleyCesarean SectionBlood PressureHypnotics and SedativesAnesthesia, IntratrachealOximetryTonsillectomyParaplegiaWakefulnessAirway ObstructionCarbon DioxideReflexAdenoidectomyIntraoperative PeriodLaminectomyAnalgesics, Opioid