Analgesics, OpioidFentanylAnesthetics, IntravenousPropofolAnesthesia, IntravenousMuscle RigidityAnesthetics, CombinedSufentanilNitrous OxideAdjuvants, AnesthesiaShiveringAnalgesiaAnesthesia Recovery PeriodMidazolamAnesthesia, GeneralDrug InteractionsDouble-Blind MethodInfusion PumpsPiperidinesMedetomidineMeperidineHypnotics and SedativesRespirationInfusions, IntravenousNefopamTroleandomycinMiosisAnesthesia, InhalationDermatologic Surgical ProceduresHalf-LifeDrug Therapy, Computer-AssistedCross-Over StudiesConsciousnessCatalepsyDose-Response Relationship, DrugMethohexitalDebrisoquinDeep SedationElectroencephalographyDrug Administration ScheduleNeuromuscular Nondepolarizing AgentsIntubation, IntratrachealCytochrome P-450 CYP3AAbdomenMorphineIntraoperative PeriodNaloxoneConscious SedationPupilHemodynamicsInjections, IntravenousInjections, SpinalPainAnesthesia, Closed-CircuitAnesthetics, DissociativeAndrostanolsPain MeasurementClonidineAnesthesiaThiopentalReceptors, Opioid, muNauseaDepression, ChemicalKetamineIntracranial PressureHeart RatePain, PostoperativeTime FactorsModels, BiologicalLaryngoscopyAnestheticsSingle-Blind MethodAdrenergic alpha-AgonistsPharmaceutical VehiclesLaryngeal MasksRadiation DosageAnalgesia, EpiduralLethal Dose 50Preanesthetic MedicationSuctionAmbulatory Surgical ProceduresMethyl EthersAnesthetics, InhalationMonitoring, IntraoperativeElectroacupunctureLidocaineOxidoreductases, N-DemethylatingBlood PressureBarium CompoundsLithotripsyDextromethorphanAnalgesia, Patient-ControlledBody Fluid CompartmentsVecuronium BromideArea Under CurveInsufflationAdministration, OralProspective StudiesAnesthetics, LocalDioxanes