Anesthetics, DissociativeKetamineInpatientsHalothaneIsofluraneMethyl EthersAnesthetics, InhalationNitrous OxideInfusions, IntravenousPropofolAnesthesia, InhalationXenonDose-Response Relationship, DrugExcitatory Amino Acid AntagonistsRespirationChemoreceptor CellsInfusions, ParenteralAnoxiaCarbon DioxideInfusion PumpsInfusions, Intra-ArterialXylazineHospitalizationAnalgesicsLength of StayHospitals, PsychiatricAnesthetics, CombinedRehabilitation CentersPsychiatric Department, HospitalTime FactorsMidazolamAnestheticsAnesthetics, IntravenousThiopentalAnesthesia, IntravenousHospital CostsPatient DischargeTreatment OutcomeInfusion Pumps, ImplantableAnesthesiaReceptors, N-Methyl-D-AspartateRetrospective StudiesDepressive Disorder, Treatment-ResistantDouble-Blind MethodUnited StatesAmbulatory CareInjections, IntravenousBlood PressureOutpatientsProspective StudiesConscious SedationPatient AdmissionRats, Sprague-DawleyInfusions, SubcutaneousDrug Administration ScheduleAcepromazineMedetomidineAdjuvants, AnesthesiaPain, PostoperativeHeart RatePsychoses, Substance-InducedHealth Care CostsStereoisomerismHospitalsPentobarbitalAnalgesics, OpioidAnesthesia, GeneralAmbulatory Surgical ProceduresHemodynamicsDiagnosis-Related GroupsHospitalistsHospitals, TeachingDogsHospitals, PediatricInfusions, IntralesionalAnesthesia, CaudalPain MeasurementDrug InteractionsEconomics, HospitalHospital ChargesFentanylMedicareBed OccupancyCross-Over StudiesMorphineBlood GlucoseAnalgesiaPreanesthetic MedicationInsulin Infusion SystemsHospital MortalityMental DisordersAnalysis of VarianceDay CareHealth ExpendituresInsulinProspective Payment SystemOutcome Assessment (Health Care)Injections, IntramuscularChild, HospitalizedDexmedetomidine