BupivacaineLidocaineAnesthetics, LocalAnesthesia, SpinalAnesthesia, EpiduralAnalgesia, EpiduralNerve BlockAnesthesia, LocalAmidesAnesthesia, ObstetricalAnalgesia, ObstetricalAnesthetics, CombinedPain, PostoperativeEtidocaineMepivacaineAnesthesia, CaudalPrilocaineDouble-Blind MethodCarticaineFentanylAdjuvants, AnesthesiaSufentanilPain MeasurementInjections, SpinalAnalgesics, OpioidAnesthesia, DentalCesarean SectionAnalgesiaEpinephrineProcaineTetracaineDose-Response Relationship, DrugSensationSubarachnoid SpaceInjections, EpiduralMorphineStereoisomerismBenzocaineSciatic NerveBrachial PlexusSodium Channel BlockersAnesthesia, ConductionInjectionsAnalgesia, Patient-ControlledAmbulatory Surgical ProceduresSodium ChannelsDental Pulp TestDrug CombinationsPainAnesthesia Recovery PeriodClonidineAnesthesia, GeneralPregnancyMandibular NerveLabor, ObstetricTime FactorsPreanesthetic MedicationMeperidineProspective StudiesInjections, IntravenousTramadolInjections, Intra-ArticularHernia, InguinalAnalgesicsRats, Sprague-DawleyAnalgesics, Non-NarcoticHemodynamicsTooth ExtractionInfusions, ParenteralAnesthetics, IntravenousSpecific GravityMolar, ThirdThoracotomyHeart Rate