Conscious SedationAnesthesia, DentalHypnotics and SedativesDeep SedationMidazolamHydroxyzinePropofolPreanesthetic MedicationAnesthetics, IntravenousAnesthesia, LocalDental AnxietyAnesthesia, RectalAlphaprodineAnesthesia, GeneralAnesthesia Recovery PeriodConsciousnessMeperidineChloral HydrateEndoscopy, Digestive SystemDentistry, OperativeBurns, ElectricAnesthesia, IntravenousHeart Valve Prosthesis ImplantationDiazepamDental ImplantationManifest Anxiety ScaleAortic Valve StenosisGastric BalloonDexmedetomidineAortic ValveCardiac CatheterizationNitrous OxideEndoscopy, GastrointestinalFentanylBrompheniramineProspective StudiesHeart Valve ProsthesisColonoscopyIntubation, IntratrachealPatient SatisfactionCholangiopancreatography, Endoscopic RetrogradeBronchoscopyCallositiesAortic Valve InsufficiencyInjections, IntravenousDouble-Blind MethodNeurosurgical ProceduresPainPilot ProjectsOxygenAnxietyEquipment DesignAnalgesiaMultidetector Computed TomographyHeart RateBone Substitutes