Anesthesia, SpinalAnesthesia, ObstetricalBupivacaineCesarean SectionAnesthesia, EpiduralAnesthetics, LocalAnalgesia, ObstetricalAnesthesia, GeneralSpinal CordAnesthesiaAnalgesia, EpiduralAnesthesia, ConductionAnesthesia, LocalEphedrineInjections, SpinalPregnancyHypotensionAnesthesia Recovery PeriodAdjuvants, AnesthesiaSufentanilSpinal Cord InjuriesLidocaineAnesthesia, InhalationSpinal PunctureLabor PainFentanylLabor Stage, FirstAnesthesia, IntravenousTetracaineAmidesLabor, ObstetricSpecific GravityDouble-Blind MethodAnalgesics, OpioidMepivacaineNerve BlockAmbulatory Surgical ProceduresSubarachnoid SpaceAnesthetics, CombinedApgar ScorePrilocainePain, PostoperativeSurgical Procedures, MinorSensationProspective StudiesAnesthetics, IntravenousPain MeasurementMonitoring, IntraoperativePropofolBlood Patch, EpiduralPelvimetryAnesthesia, DentalEpidural SpacePost-Dural Puncture HeadacheCarticaineIntraoperative ComplicationsMorphineHeadacheShiveringSpinal Nerve RootsAnalgesia, Patient-ControlledPostoperative Nausea and VomitingIsotonic SolutionsPregnancy Complications, CardiovascularAnesthetics, InhalationHernia, InguinalPlasma SubstitutesConscious SedationFemoral NerveAnestheticsPreanesthetic MedicationHydroxyethyl Starch DerivativesPostpartum HemorrhageDelivery, ObstetricSpinal NervesSpinal Cord DiseasesIsofluraneMethyl EthersAnesthesiologyEtilefrineParturitionKetamineSpinal Cord NeoplasmsSpinal CanalHematoma, Subdural, IntracranialLumbosacral RegionNeedlesNitrous OxideSpinal DiseasesSpinal Cord CompressionTransurethral Resection of ProstatePuerperal DisordersHallux VarusHemodynamicsObstetric Labor ComplicationsMidazolamInfant, NewbornCerebrospinal Fluid PressurePhenylephrineParity