PremedicationPreanesthetic MedicationAnesthetics, DissociativeMidazolamAcepromazineAdjuvants, AnesthesiaMeperidineDiazepamHypnotics and SedativesClonidineAnti-Anxiety AgentsDrug HypersensitivityAnesthetics, IntravenousPromethazineAnesthesia, IntravenousPropofolAnesthesia, GeneralXylazineFentanylAnalgesicsDouble-Blind MethodMedetomidineThiopentalAnesthesia, DentalAmbulatory Surgical ProceduresAnesthesia, InhalationCandyAnesthetics, CombinedButorphanolMethyl EthersAnxiety, SeparationDiphenhydramineAnesthesiaConscious SedationButylscopolammonium BromideAdrenergic alpha-AgonistsInfusions, IntravenousAnesthetics, InhalationAnestheticsAnesthesia Recovery PeriodNeuroleptanalgesiaAdministration, RectalPaclitaxelInjections, IntramuscularBelladonna AlkaloidsAtropineAntineoplastic Agents, PhytogenicIntubation, IntratrachealKetamineClemastineBenperidolPain, PostoperativeHistamine H1 AntagonistsAdministration, OralLorazepamNitrous OxideAdministration, BuccalOphthalmologic Surgical ProceduresAnesthesia, LocalDose-Response Relationship, DrugIodine CompoundsOpiumSympatholyticsAnalgesics, OpioidExcitatory Amino Acid AntagonistsHeart RateSuccinylcholineIsonipecotic AcidsMorphineAdministration, SublingualMiosisDental AnxietyGastroscopyVomitingTaxoidsIsofluraneRespirationAnxietyDrug Administration ScheduleGynecologic Surgical ProceduresDrug InteractionsInjections, IntravenousPainPain MeasurementProspective StudiesAnesthesia, SpinalDimethylpolysiloxanesScopolamine HydrobromideDrug CombinationsBlood PressureRandom AllocationParasympatholyticsReceptors, N-Methyl-D-AspartateLidocaineHemodynamicsDepressive Disorder, Treatment-ResistantAnesthetics, LocalNauseaIntraoperative PeriodMonitoring, Intraoperative