Conscious SedationAnalgesiaDeep SedationAnalgesia, EpiduralAnalgesia, ObstetricalHypnotics and SedativesAnalgesia, Patient-ControlledAnalgesics, OpioidPain, PostoperativeMidazolamPain MeasurementFentanylMorphineAnesthesia, DentalPropofolBupivacaineAnesthetics, LocalAnalgesicsMeperidineClinical ProtocolsAcupuncture AnalgesiaSufentanilAnesthesia, EpiduralDexmedetomidinePainAnesthetics, IntravenousAnesthesia Recovery PeriodDouble-Blind MethodPreanesthetic MedicationAnesthesia, GeneralNerve BlockLabor PainInjections, SpinalAnesthesia, IntravenousKetamineAnesthetics, CombinedAnesthesia, SpinalAnesthesia, LocalAnesthesia, ObstetricalAdjuvants, AnesthesiaTramadolAlfentanilAnalgesics, Non-NarcoticLabor, ObstetricAnesthetics, DissociativeChloral HydrateProspective StudiesPostoperative Nausea and VomitingAmidesDental AnxietyClonidineConsciousness MonitorsNitrous OxideButorphanolLidocaineAnesthesia, ConductionHydroxyzineDroperidolNaloxoneAmbulatory Surgical ProceduresDrug ToleranceDiazepamCesarean SectionRespiration, ArtificialPain ThresholdHydromorphonePain ManagementPostoperative CareKetorolacPiperidinesTime FactorsDose-Response Relationship, DrugInterpleural AnalgesiaInfusions, IntravenousAnesthesia, CaudalReceptors, Opioid, muTreatment OutcomeAnesthesiaIntensive Care UnitsPirinitramideNalbuphineIntensive CarePregnancyTooth ExtractionLabor Stage, FirstPruritusConsciousnessPatient SatisfactionMedetomidineReceptors, OpioidInjections, IntravenousMonitoring, IntraoperativeAnti-Anxiety AgentsPain, IntractableAdrenergic alpha-AgonistsAnesthesia and AnalgesiaNarcotic AntagonistsFemoral NerveDrug Administration ScheduleElectroencephalography