BupivacaineAnesthetics, LocalAnestheticsAnesthetics, InhalationLidocaineAnesthesia, SpinalAnesthetics, GeneralAnesthesia, LocalAnesthetics, CombinedAnalgesia, EpiduralNerve BlockAnesthetics, IntravenousAnesthesia, EpiduralAmidesAnesthesia, ObstetricalAnalgesia, ObstetricalIsofluraneHalothanePain, PostoperativeEtidocaineMepivacaineFentanylAdjuvants, AnesthesiaAnesthesia, CaudalCarticaineEnfluraneSufentanilAnesthesia, GeneralDouble-Blind MethodPrilocaineMethyl EthersProcaineAnesthetics, DissociativeAnesthesiaInjections, SpinalTetracaineCesarean SectionAnesthesia, DentalPropofolPain MeasurementAnalgesics, OpioidAnesthesia, InhalationBenzocaineMethoxyfluraneAnalgesiaDose-Response Relationship, DrugKetamineThiopentalAnesthesia Recovery PeriodAmbulatory Surgical ProceduresStereoisomerismAnesthesia, ConductionBrachial PlexusNitrous OxideSensationSubarachnoid SpaceDibucaineAnalgesia, Patient-ControlledEtomidatePreanesthetic MedicationMorphineHypnosis, AnestheticInjections, EpiduralPentobarbitalEtherSciatic NerveAnesthesiologyEpinephrinePregnancyTime FactorsLabor, ObstetricAnesthesia, IntravenousInjectionsDrug CombinationsProspective StudiesHemodynamicsRats, Sprague-DawleyInjections, Intra-ArticularHernia, InguinalChloroformDexmedetomidineClonidineTramadolXylazinePostoperative Nausea and VomitingSpecific GravityTooth ExtractionThoracotomyEthersMeperidineSurgical Procedures, MinorIntraoperative PeriodPregnanedionesDrug InteractionsAnalgesics, Non-NarcoticXenonMolar, ThirdEpidural SpaceHeart Rate