• We introduce the concept of openended, successive-day, tympanometric screening. In impedance screening of children for middle ear disorders, there is a serious risk of over-referral if decisions are made on the basis of a single tympanogram. Serial tympanometric studies of Australian aboriginal children show that, whereas the type B tympanogram is usually stable, type A and type C patterns are prone to vary from day to day, inviting inappropriate referral decisions unless the classifications are confirmed by tests on successive days.
(Arch Otolaryngol 101:722-725, 1975)
Lewis N, Dugdale A, Canty A, Jerger J. Open-Ended Tympanometric Screening: A New Concept. Arch Otolaryngol. 1975;101(12):722–725. doi:10.1001/archotol.1975.00780410014003
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