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Békésy audiometry in evaluation of hearing in cases of raised intracranial pressure.

The paper reports findings in a Békésy audiometry study on 50 ears of 27 patients with raised intracranial pressure. The Békésy audiometry was done both preoperatively and after operation when the raised intracranial pressure had been controlled. The study showed a significant hearing loss in Békésy audiometry due to raised intracranial pressure. However, only low frequencies of 125-250-500 Hz showed a reversal of hearing loss which was statistically significant. The type II pattern of Békésy audiometry changed to type I after control of the raised intracranial pressure. The type IV and V patterns had a tendency to change to Békésy I or II, on control of the raised intracranial pressure.