Conscious SedationAnesthesia, DentalHypnotics and SedativesDeep SedationMidazolamNursesHydroxyzinePropofolPreanesthetic MedicationAnesthetics, IntravenousAnesthesia, LocalDental AnxietyAnesthesia, RectalAlphaprodineAnesthesia, GeneralAnesthesia Recovery PeriodConsciousnessMeperidineChloral HydrateEndoscopy, Digestive SystemDentistry, OperativeBurns, ElectricAnesthesia, IntravenousDiazepamDental ImplantationManifest Anxiety ScaleGastric BalloonDexmedetomidineNurse PractitionersNitrous OxideEndoscopy, GastrointestinalFentanylTooth ExtractionNursing Staff, HospitalProspective StudiesPatient SatisfactionColonoscopyIntubation, IntratrachealCholangiopancreatography, Endoscopic RetrogradeBronchoscopyDouble-Blind MethodInjections, IntravenousNurse's Practice PatternsNurse AdministratorsPilot ProjectsPainNeurosurgical ProceduresTreatment OutcomeAnxietyOxygenEquipment DesignQuestionnairesNurse-Patient RelationsTime FactorsAnalgesiaRetrospective StudiesHeart RateEducation, Nursing, Continuing