title: Tympanometric patterns found in middle ear effusions.
abstract: In 120 ears of 67 children with a history of recurrent acute otitis media or otoscopic evidence of persistent middle ear effusion, or both, tympanograms were obtained using an otoadmittance meter and an electro-acoustic impedance bridge. Myringotomy was performed immediately following the tympanometric evaluation confirming the presence or absence of middle ear effusion. The comparison of myringotomy findings with a tympanometric pattern classification revealed 85.8% overall correct association with the presence or absence of a middle ear effusion for both instruments. In 83.3% of the cases, there was agreement in the classification of the tympanogram between the otoadmittance meter and the electro-acoustic bridge.
mesh_terms: D000293:Adolescent; D002648:Child; D002675:Child, Preschool; D003951:Diagnostic Errors; D004432:Ear, Middle / Q000503:physiopathology*; D004568:Electrodiagnosis / Q000295:instrumentation; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D010033:Otitis Media / Q000503:physiopathology*; D010036:Otolaryngology / Q000295:instrumentation