Anesthesia, EpiduralAnesthesia, GeneralAutonomic Nerve BlockThoracic VertebraeThoraxBupivacaineLidocaineAnesthetics, LocalAnesthesiaAnesthesia, ObstetricalEphedrineSympathetic Fibers, PostganglionicAdrenergic AgentsAnesthesia, SpinalAnesthesia, LocalAnesthesia, ConductionCentral Venous PressureAnesthesia, InhalationHemodynamicsAnesthesia, IntravenousAnesthetics, CombinedSympathetic Nervous SystemMepivacaineAnesthesia Recovery PeriodAnesthesia, CaudalMicrocirculationAdjuvants, AnesthesiaAnesthesia, DentalCesarean SectionAnesthetics, InhalationProcaineAnalgesia, EpiduralMonitoring, IntraoperativeMethyl EthersAnesthetics, IntravenousIsofluraneFentanylPropofolNerve BlockPain, PostoperativeAnesthesiologyShiveringEtilefrineSkin TemperatureAnestheticsNitrous OxideEpidural SpaceEpinephrineHalothaneHorner SyndromeAmides