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Fistula sign

Last reviewed dd mmm yyyy. Last edited dd mmm yyyy

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This test is used in the examination of a patient with recurrent vertigo. A finger is abruptly applied to the external meatus. This, in turn, causes a pulse of air-transmitted pressure. If this test induces nystagmus in association with vertigo, then it indicates bony destruction in the inner ear e.g. cholesteatoma.

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