A Test to Detect Collapse of the External Ear Canal During Audiometry

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Abstract
A technique for detecting collapse of the auditory meatus as a result of earphone pressure during audlometry is described. The stem of a vibrating tuning fork is placed on the midllne of the patient''s skull and he is asked to judge the relative location and loudness of the tone while the earphone is alternately pressed against the pinna and removed several times. If the external meatus does not collapse, the presence of the earphone cushion produces no change in the location or relative loudness of the tone. However, collapse of the meatus under the pressure of the cushion causes the expected laterallzatlon of the tone to the collapsed side and a noticeable change in loudness.

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