MidazolamPremedicationHypnotics and SedativesPreanesthetic MedicationAnesthetics, DissociativeAnti-Anxiety AgentsConscious SedationAdjuvants, AnesthesiaAnesthetics, IntravenousPropofolAnesthesia, DentalDiazepamBenzodiazepinesFentanylKetamineAnesthesia Recovery PeriodMeperidineGABA ModulatorsAcepromazineFlumazenilAnesthetics, CombinedAnesthesia, IntravenousCytochrome P-450 CYP3ADouble-Blind MethodThiopentalPromethazineDexmedetomidineClonidineAdministration, BuccalAnalgesicsAnestheticsLorazepamAnesthesia, GeneralDrug InteractionsXylazineButorphanolMedetomidineAnesthesia, InhalationAdministration, RectalAnesthesiaAnxiety, SeparationInfusions, IntravenousDental AnxietyAmbulatory Surgical ProceduresAnesthetics, InhalationDose-Response Relationship, DrugNitrous OxideInjections, IntravenousMethyl EthersAdrenergic alpha-AgonistsAdministration, OralHydroxyzineDrug HypersensitivityInjections, IntramuscularOxazepamAnalgesics, OpioidTranquilizing AgentsDeep SedationTriazolamAnesthesia, LocalElectroencephalographyChloral HydrateDiphenhydramineAlfentanilSecobarbitalRespirationIntubation, IntratrachealPentobarbitalHeart RateHistamine H1 AntagonistsCandyEtomidateAnxietyIsofluraneAnesthesia, SpinalProspective StudiesOxidoreductases, N-DemethylatingButylscopolammonium BromidePain MeasurementHemodynamicsNeuroleptanalgesiaReceptors, GABA-APaclitaxelCytochrome P-450 Enzyme SystemAnalgesiaMorphineGastroscopyBelladonna AlkaloidsMonitoring, IntraoperativeTime FactorsPain, PostoperativePainAtropinePsychomotor AgitationAntineoplastic Agents, PhytogenicDrug CombinationsAdministration, SublingualMethohexitalAdministration, IntranasalCross-Over Studies