Analgesics, OpioidAnesthetics, IntravenousFentanylAnesthesia, IntravenousPropofolSufentanilAnesthetics, CombinedAdjuvants, AnesthesiaNitrous OxideMuscle RigidityAnesthesia, GeneralAnesthesia Recovery PeriodMidazolamAnalgesia, EpiduralAnalgesiaMeperidineDouble-Blind MethodPain, PostoperativeHypnotics and SedativesDrug InteractionsMorphineInfusion PumpsPreanesthetic MedicationAlfentanilPiperidinesAnesthesia, InhalationMedetomidineRespirationReceptors, Opioid, muPain MeasurementShiveringAnalgesia, Patient-ControlledDose-Response Relationship, DrugNaloxoneConscious SedationInfusions, IntravenousTroleandomycinDermatologic Surgical ProceduresBupivacaineAnesthesiaInjections, SpinalPainAdministration, CutaneousAnesthetics, LocalNeuromuscular Nondepolarizing AgentsAnesthetics, InhalationNarcoticsAnalgesia, ObstetricalIntubation, IntratrachealMethyl EthersDeep SedationConsciousnessAnestheticsMethohexitalIsofluraneCross-Over StudiesHemodynamicsDrug Therapy, Computer-AssistedThiopentalNefopamIntraoperative PeriodElectroencephalographyMiosisKetamineInjections, IntravenousCytochrome P-450 CYP3AHalf-LifePupilAndrostanolsAmbulatory Surgical ProceduresClonidineBreakthrough PainAnesthetics, DissociativeLidocaineHeart RateAbdomenLaryngeal MasksCatalepsyDebrisoquinVecuronium BromideLaryngoscopyAnalgesicsIntracranial PressureAnesthesia, EpiduralMonitoring, IntraoperativeDepression, ChemicalAnesthesia, ObstetricalDroperidolAdrenergic alpha-AgonistsAnesthesia, Closed-CircuitBlood PressureModels, BiologicalSingle-Blind MethodProspective StudiesDrug Administration ScheduleComputersTransdermal PatchNarcotic AntagonistsOxidoreductases, N-DemethylatingAdministration, Buccal