title: A brief review of the use of both tympanometric pressure equalization and middle-ear function in assessing eustachian tube patency.
abstract: This paper reviews recent studies on the tympanometric assessment of Eustachian tube patency involving the traditional technique of assessing pressure equilibration plus the analysis of changes in middle-ear ability to transmit energy through its system (middle-ear function). Normative data in the literature on 89 pediatric ears and 48 adult ears are discussed. The data illustrated a significant loss of information if pressure change is measured without consideration of middle-ear function change. Recommendations for the clinic are given and the need stated for extending such work to the pathological ear.
mesh_terms: D000158:Acoustic Impedance Tests / Q000379:methods*; D001299:Audiometry; D002648:Child; D004427:Ear Diseases / Q000175:diagnosis / Q000503:physiopathology; D004432:Ear, Middle / Q000503:physiopathology*; D005064:Eustachian Tube / Q000503:physiopathology*; D006801:Humans