EndoscopyEndoscopy, Digestive SystemNoseEndoscopesButorphanolEndoscopes, GastrointestinalGastroscopesNasal CavitySphenoid SinusNasal DecongestantsNeuronavigationEthmoid SinusSphenopalatine Ganglion BlockOdontoid ProcessOtorhinolaryngologic Surgical ProceduresCerebrospinal Fluid RhinorrheaParanasal Sinus DiseasesGastrostomyGastroscopyVital SignsPlatybasiaSkull BaseUvulaEsophagoscopesIntubation, GastrointestinalConscious SedationDecompression, SurgicalDiplopiaStomach DiseasesPneumonia, AspirationMaxillary SinusMucoceleSella TurcicaTympanic MembraneAnesthesia, LocalPharynxPituitary NeoplasmsEquipment DesignAdministration, IntranasalEndoscopy, GastrointestinalHeartburnPain MeasurementPatient SatisfactionAnesthetics, LocalTreatment OutcomeTomography, X-Ray ComputedProspective StudiesRetrospective Studies