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The middle ear function of over 100 school children has been observed for more than seven years with the aid of an electroacoustic impedance instrument. The technique readily demonstrates middle ear abnormalities. A few children may have middle ear malfunction for considerable periods without this being detected by those responsible for their health care. The presence of fluid in the middle ear is not necessarily an indication for treatment. The concept of acoustic impedance screening is advocated with suitable safeguards to prevent over-referral.
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