PropofolAnesthetics, IntravenousInfusions, IntravenousInfusions, ParenteralInfusion PumpsHypnotics and SedativesConscious SedationInfusions, Intra-ArterialAnesthetics, CombinedAnesthesia Recovery PeriodThiopentalAnesthetics, InhalationAlfentanilMethyl EthersAnesthesia, GeneralDeep SedationMidazolamDose-Response Relationship, DrugMonitoring, IntraoperativeFentanylEtomidateMethohexitalConsciousness MonitorsAnesthesiaElectroencephalographyAnesthetics, GeneralAnestheticsIsofluranePiperidinesConsciousnessBlood PressureNitrous OxideInfusion Pumps, ImplantableHemodynamicsKetamineHeart RateDrug Administration ScheduleInjections, IntravenousFat Emulsions, IntravenousAnesthetics, DissociativeInfusions, SubcutaneousRats, Sprague-DawleyAdjuvants, AnesthesiaDouble-Blind MethodDogsUnconsciousnessTime FactorsAnalgesics, OpioidDexmedetomidineInfusions, IntralesionalDrug InteractionsNeuromuscular Nondepolarizing AgentsAnesthesia, InhalationPreanesthetic MedicationAmbulatory Surgical ProceduresEmulsionsIntubation, IntratrachealProspective StudiesMetabolic Clearance Rate