Hypnotics and SedativesAnalgesicsAnalgesics, OpioidAnalgesics, Non-NarcoticAnalgesiaConscious SedationPainPain MeasurementMidazolamDexmedetomidineMorphineTranquilizing AgentsAnti-Anxiety AgentsPain, PostoperativeTramadolDrug TolerancePhenacetinPropofolPreanesthetic MedicationAcetaminophenCodeineMeperidineFentanylDextropropoxypheneDose-Response Relationship, DrugDouble-Blind MethodPentazocineChlormethiazoleKetamineAnti-Inflammatory Agents, Non-SteroidalBenzodiazepinesButorphanolAnesthetics, LocalAdrenergic alpha-2 Receptor AgonistsLorazepamPain ThresholdSelf MedicationChloral HydrateAlprazolamAnesthetics, DissociativeBarbituratesClonidineAnesthesia, DentalAdrenergic alpha-AgonistsPain ManagementReceptors, Opioid, muOxycodoneAnesthetics, IntravenousDipyroneHyperalgesiaInjections, SpinalNitrous OxideMeprobamatePrescription DrugsBupivacaineAnalgesia, EpiduralSecobarbitalPentobarbitalNaloxoneMotor ActivityCyclazocineBehavior, AnimalReflex, RightingAlfentanilAnalgesia, Patient-ControlledNonprescription DrugsHistamine H1 Antagonists, Non-SedatingNitrazepamConsciousness MonitorsNarcoticsCarrageenanAnestheticsXylazineKetoprofenEthanolRats, Sprague-DawleyKidney Papillary NecrosisTolmetinGABA ModulatorsAnesthesia Recovery PeriodTriazolamNefopamReceptors, GABA-AReceptors, OpioidHydrocodoneNarcotic AntagonistsPlant ExtractsKetorolacPain, IntractableHistamine H1 AntagonistsIbuprofenNociceptionNeuralgiaHydromorphoneSleepChlordiazepoxideAnesthesiaTime FactorsDrug InteractionsNalorphine