title: [Functional results of tympanum drainage in chronic seromuco-tympanum--Clinical course up to 2 years following the operation].
abstract: The hearing capacity of 95 children with chronic seromuco-tympanum (SMT) treated with middle-ear ventilation tubes was studied preoperatively and for a period of up to two years after the operation. A total of 510 audiograms with the threshold of air conduction and bone conduction were evaluated. The pre-surgery audiogram shows on the average an air-bone gap of 30 dB. In the first post-surgery audiogram the air-bone gap was improved on the average by 15-20 dB. The observation carried out over a period of two years shows that in general this improvement of the hearing capacity is preserved. The treatment of SMT by middle-ear ventilation tubes and the resulting improvement of the hearing capacity prevents the negative effects on children's acquisition of speech and on their intellectual development.
mesh_terms: D000293:Adolescent; D001301:Audiometry, Pure-Tone; D002648:Child; D002675:Child, Preschool; D004322:Drainage; D004427:Ear Diseases / Q000601:surgery; D004432:Ear, Middle / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D009961:Orosomucoid / Q000378:metabolism*; D013997:Time Factors
chemical_list: D009961:Orosomucoid
vernacular_title: Funktionelles Ergebnis der Paukendrainage beim chronischen Seromucotympanon. Verlaufsbeobachtung bis zwei Jahre nach der Operation.