Infusions, IntravenousAnalgesics, OpioidFentanylAnesthetics, IntravenousInfusion PumpsInfusions, ParenteralPropofolAnesthesia, IntravenousMuscle RigidityAnesthetics, CombinedSufentanilNitrous OxideAdjuvants, AnesthesiaInfusions, Intra-ArterialAnalgesiaShiveringAnesthesia Recovery PeriodAnesthesia, GeneralMidazolamPiperidinesDose-Response Relationship, DrugHypnotics and SedativesMedetomidineDrug InteractionsMeperidineRespirationDouble-Blind MethodCross-Over StudiesNefopamHemodynamicsTroleandomycinAnesthesia, InhalationConsciousnessDrug Therapy, Computer-AssistedMiosisDermatologic Surgical ProceduresHalf-LifeInjections, IntravenousDrug Administration ScheduleBlood PressureElectroencephalographyMethohexitalHeart RateDeep SedationNeuromuscular Nondepolarizing AgentsAnesthesiaInfusion Pumps, ImplantableConscious SedationCatalepsyAbdomenMorphineDebrisoquinIntubation, IntratrachealNaloxoneIntraoperative PeriodCytochrome P-450 CYP3APupilAnesthetics, DissociativeInjections, SpinalPain, PostoperativeThiopentalPain MeasurementKetamineAndrostanolsAnesthesia, Closed-CircuitTime FactorsInfusions, SubcutaneousClonidinePainDepression, ChemicalIntracranial PressureNauseaAnalgesia, EpiduralAdrenergic alpha-AgonistsReceptors, Opioid, muAnestheticsSingle-Blind MethodModels, BiologicalLidocaineDogsLaryngoscopyInfusions, IntralesionalPharmaceutical VehiclesMonitoring, IntraoperativeAnesthetics, LocalAnesthetics, InhalationMethyl EthersAmbulatory Surgical ProceduresLaryngeal MasksAnalgesia, Patient-ControlledRats, Sprague-DawleySuctionPreanesthetic MedicationEpinephrineVecuronium BromideElectroacupunctureBody Fluid CompartmentsOxidoreductases, N-DemethylatingProspective StudiesAlfentanil