Conscious SedationDeep SedationHypnotics and SedativesAnesthesia, DentalMidazolamPropofolHydroxyzineAnesthetics, IntravenousPreanesthetic MedicationAnesthesia, LocalDental AnxietyAnesthesia Recovery PeriodAnesthesia, GeneralAnesthesia, RectalChloral HydrateConsciousnessMeperidineAnesthesia, IntravenousAlphaprodineEndoscopy, Digestive SystemDexmedetomidineDiazepamDentistry, OperativeBurns, ElectricFentanylManifest Anxiety ScaleDental ImplantationNitrous OxideGastric BalloonEndoscopy, GastrointestinalTooth ExtractionColonoscopyProspective StudiesAnalgesiaIntubation, IntratrachealPatient SatisfactionDouble-Blind MethodCholangiopancreatography, Endoscopic RetrogradeBronchoscopyConsciousness MonitorsInjections, IntravenousPainAnesthetics, CombinedKetamineAnesthetics, DissociativePilot ProjectsAdjuvants, AnesthesiaAnalgesics, OpioidNeurosurgical ProceduresTreatment OutcomeOxygenRespiration, ArtificialAnxietyAlfentanilDroperidolHeart RateEquipment DesignTime FactorsAnesthesiaElectroencephalographyIntensive Care Units