MeperidineShiveringAnalgesics, OpioidAdjuvants, AnesthesiaAnalgesia, ObstetricalPromethazineHydroxyzineDihydroergotamineAlfentanilAnalgesia, EpiduralConscious SedationPreanesthetic MedicationChloral HydrateFentanylCesarean SectionAnalgesia, Patient-ControlledButorphanolBiotransformationDextropropoxypheneMorphineKetorolac TromethamineSufentanilAnalgesics, Non-NarcoticAnesthesia, SpinalKetorolacSerotonin SyndromeSkin TemperatureChromatography, High Pressure LiquidAnesthesia, DentalTolmetinAnesthetics, LocalPain Measurement