AspirinNarcoticsNalorphineLevallorphanAnalgesicsMeperidinePentazocineAnalgesics, OpioidDextropropoxypheneLevorphanolAlphaprodineMorphineMorphinansPapaverCyclazocineIsonipecotic AcidsFentanylMethadoneNaloxonePainDrug and Narcotic ControlAnalgesics, Non-NarcoticAnalgesiaNarcotic AntagonistsAnti-Inflammatory Agents, Non-SteroidalPain, PostoperativePain MeasurementCodeinePlatelet Aggregation InhibitorsOpiumAcetaminophenOxymorphoneLegislation, DrugOpioid-Related DisordersDrug ToleranceTramadolOxycodonePhenacetinHydrocodoneHeroinPreanesthetic MedicationPain ManagementDose-Response Relationship, DrugDouble-Blind MethodHydromorphonePain, IntractableCyclooxygenase InhibitorsReceptors, Opioid, muAnesthetics, LocalTiclopidineBupivacaineThromboxane B2SalicylatesReceptors, OpioidIbuprofenButorphanolAnalgesia, Patient-ControlledAlfentanilSubstance-Related DisordersSpasmMorphine DerivativesPlatelet AggregationTreatment OutcomeTime FactorsBuprenorphinePain ThresholdDrug Therapy, CombinationInert Gas NarcosisMethotrimeprazineEndorphinsNitrous OxideMorphine DependencePlatelet Function TestsAlcoholics AnonymousKidney Papillary NecrosisProspective StudiesMitragynaAnesthesiaDrug InteractionsNaltrexoneDrug OverdoseDipyroneHyperalgesiaGastrointestinal DiseasesHypnotics and SedativesInjections, SpinalNerve BlockParamethasoneKetonesBridged CompoundsKetoprofenAnalgesia, EpiduralSodium SalicylateSubstance Withdrawal SyndromeCarrageenanDibenzocycloheptenesTolmetinCyclooxygenase 2 InhibitorsAnestheticsBlood Platelets