AnalgesiaAnalgesia, EpiduralAnesthesia, GeneralAnalgesia, ObstetricalAnesthesiaAnesthesia, LocalAnesthesia, EpiduralAnesthesia, SpinalAnalgesia, Patient-ControlledAnesthesia, ConductionAnesthesia, InhalationAnesthesia, IntravenousAnesthesia, ObstetricalAnalgesics, OpioidPain, PostoperativeAnesthetics, LocalBupivacaineAnesthesia Recovery PeriodFentanylPain MeasurementAnesthesia, DentalMorphineAdjuvants, AnesthesiaNerve BlockAnesthetics, IntravenousAnesthetics, InhalationAnesthetics, CombinedPropofolAcupuncture AnalgesiaAnalgesicsLidocaineNitrous OxideSufentanilMethyl EthersAnesthesiologyIsofluraneMeperidinePainKetamineAnesthesia, CaudalAnestheticsMonitoring, IntraoperativeDouble-Blind MethodLabor PainConscious SedationCesarean SectionInjections, SpinalAmbulatory Surgical ProceduresPostoperative Nausea and VomitingHalothaneAmidesPreanesthetic MedicationAnesthesia and AnalgesiaLabor, ObstetricAnesthetics, DissociativeHypnotics and SedativesTramadolProspective StudiesAlfentanilAnesthesia, Closed-CircuitMepivacaineAnesthetics, GeneralAnalgesics, Non-NarcoticThiopentalPrilocaineAnesthesia Department, HospitalXylazineTreatment OutcomeTime FactorsPentobarbitalNaloxonePregnancyIntubation, IntratrachealIntraoperative PeriodEnfluraneIntraoperative ComplicationsPain ThresholdPiperidinesKetorolacDose-Response Relationship, DrugClonidineFemoral NerveInterpleural AnalgesiaMidazolamDrug ToleranceAnesthesia, IntratrachealBrachial PlexusPostoperative ComplicationsLabor Stage, FirstReceptors, Opioid, muDexmedetomidinePostoperative CarePirinitramideHydromorphonePain ManagementButorphanolHemodynamicsSurgical Procedures, MinorConsciousnessElectroencephalography