Schwabach test

Schwabach test
(for hearing) with the patient's opposite ear masked, vibrating tuning forks of 256, 512, 1024, and 2048 Hz have their stems placed first on the patient's mastoid process and then on that of the examiner (whose hearing should be normal), until sound is no longer heard by one of them. The result is expressed as “Schwabach prolonged” if heard longer by the patient (indicative of conductive hearing loss), as “Schwabach shortened or diminished” if heard longer by the examiner (indicative of sensorineural hearing loss), and as “Schwabach normal” if heard for the same time by both.

Medical dictionary. 2011.

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