SufentanilPiperidinesAnalgesics, OpioidAnesthetics, IntravenousFentanylAnesthetics, CombinedPropofolAnesthesia, IntravenousAlfentanilAnalgesia, ObstetricalAnesthesia Recovery PeriodAnalgesia, EpiduralAdjuvants, AnesthesiaHypnotics and SedativesPain, PostoperativeBupivacaineAnesthesia, GeneralIntubation, IntratrachealMonitoring, IntraoperativeAnestheticsDouble-Blind MethodInjections, SpinalInfusions, IntravenousConscious SedationAnalgesiaLaryngoscopyAnalgesia, Patient-ControlledMethyl EthersAnesthetics, InhalationPreanesthetic MedicationMidazolamAnesthesia, ObstetricalAnesthesia, SpinalAnesthetics, LocalLabor, ObstetricPostoperative Nausea and VomitingElectroencephalographyPain MeasurementMorphineDose-Response Relationship, DrugPruritusAnesthesiaLabor Stage, FirstHeart RateNitrous OxideHemodynamicsIsofluraneConsciousnessProspective StudiesBlood PressureDrug InteractionsDermatologic Surgical ProceduresMeperidineCesarean SectionIntraoperative CareDrug ToleranceEntropyInfusion PumpsSubarachnoid SpaceKetamineRespiratory RateAmides