Editorial Retrospective

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Abstract
Five years ago an article1 and accompanying editorial2 in the Journal directed attention to a simple test of middle-ear status then relatively new to clinical pediatrics. The test, tympanometry, entails the use of an electroacoustic impedance bridge to provide easily interpretable data in graphic form. Tympanometry had been found highly sensitive in detecting middle-ear disorders, particularly effusion, in all but two circumstances: in infants under seven months of age, and early in the course of acute middle-ear infection. The specificity of tympanometry had varied with the type of graphic abnormality produced; certain curves appeared highly indicative of middle-ear disease, whereas . . .

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