MeperidineShiveringAnalgesics, OpioidNalorphineAdjuvants, AnesthesiaAnalgesia, ObstetricalPromethazinePentazocinePromazineMorphineLabor PainDipyroneInjections, IntramuscularOpipramolHydroxyzinePain, PostoperativeAnesthesia, ObstetricalCyclizineFentanylDihydroergotamineMeptazinolFenclonineIproniazidPargylineHeroinAlfentanilColicPain MeasurementAnalgesia, EpiduralNaloxoneAnesthesia, EpiduralNarcoticsConscious SedationAnalgesicsPreanesthetic MedicationRenal ColicLabor, ObstetricCardiotocographyAnesthetics, LocalChloral HydrateCesarean SectionIsonipecotic AcidsBupivacaineAnalgesia, Patient-ControlledNeuroleptanalgesiaNialamide