Validity of Acoustic Reflectometry in Detecting Middle Ear Effusion

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Abstract
Pneumootoscopy, tympanometry, and acoustic reflectometry were performed in 256 middleclass children seen in a surburban pediatric office. The results demonstrated that relectometry, when validated by otoscopic findings, detected middle ear effusion with 88% sensitivity and 83% specificity when a cut-off of 5 linear units was used. Corresponding values for tympanometry were 87% and 77.5%. These results are in keeping with those of earlier studies on acoustic reflectometry and demonstrate the usefulness of this simple technique in detecting chronic and acute otitis media with effusion.

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