Anesthesia, EpiduralBupivacaineAnesthetics, LocalAnesthesia, ObstetricalAnesthesia, GeneralAnesthesia, SpinalLidocaineAnesthesiaAnesthesia, LocalAnalgesia, EpiduralAnesthesia, ConductionAnesthesia, CaudalAnesthetics, CombinedMepivacaineCesarean SectionNerve BlockPain, PostoperativeAdjuvants, AnesthesiaAmidesProcaineAnesthesia, InhalationFentanylAnalgesia, ObstetricalAutonomic Nerve BlockAnesthesia, IntravenousAnesthesia Recovery PeriodShiveringEphedrineEpidural SpaceAnesthesia, DentalDouble-Blind MethodEtilefrineSkin TemperatureEpinephrinePain MeasurementMonitoring, IntraoperativeAnesthetics, InhalationAnalgesiaAnalgesics, OpioidInjections, EpiduralLumbosacral RegionPregnancyLabor, ObstetricHorner SyndromeMethyl EthersSensationIsofluraneHemodynamicsSufentanilThoraxAnesthetics, IntravenousEtidocaineMeperidineLabor Stage, FirstThoracic VertebraePropofolAnalgesia, Patient-ControlledPuerperal DisordersDihydroergotamineRitodrineProspective StudiesCarticaineMorphineHeart RateBlood PressureIntraoperative PeriodBody Temperature RegulationAmbulatory Surgical ProceduresAnesthesiologyHypothermiaHypotensionInjections, SpinalAnestheticsPreanesthetic MedicationTime FactorsPostoperative ComplicationsDose-Response Relationship, DrugApgar ScoreHalothaneThoracotomyLumbosacral PlexusNitrous OxideSurgical Procedures, OperativePiroxicamPrilocainePostoperative PeriodDiagnostic Techniques, NeurologicalHysterectomyBlood CirculationKetamineThiopentalDelivery, ObstetricSympathetic Fibers, PostganglionicRespirationAnesthesia, Closed-CircuitBrachial PlexusLegSubarachnoid SpaceAnesthetics, DissociativeStereoisomerism