title: The tympano-frontal shunt: a procedure for the treatment of chronic Eustachian tube insufficiency.
abstract: Eight ears with complications due to chronic eustachian tube insufficiency had insertion of a silicone rubber tympano-frontal shunt tube between the mastoid antrum and the ipsilateral frontal sinus. A one-way valve designed to open at -10 mm H20 was placed on the tympanic end of the tube to minimize tube obstruction by ear secretions. Follow-up an average of 20 months post insertion showed six of the eight ears to have an aerated middle ear without fluid or tympanic membrane retraction or perforation.
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D001299:Audiometry; D002908:Chronic Disease; D004427:Ear Diseases / Q000503:physiopathology / Q000601:surgery*; D005064:Eustachian Tube / Q000503:physiopathology / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D005626:Frontal Sinus / Q000601:surgery*; D006801:Humans; D007440:Intubation / Q000379:methods*; D008297:Male; D008365:Manometry; D008416:Mastoid / Q000601:surgery; D010033:Otitis Media / Q000150:complications; D019736:Prostheses and Implants / Q000379:methods*; D012826:Silicone Elastomers; D014636:Valsalva Maneuver
chemical_list: D012826:Silicone Elastomers