, Volume 151, Issue 8, pp 1005-1008
Date: 18 Feb 2009

Extreme sensitivity of hearing to decreases of ICP in Menière’s disease

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We report the case of a Menière’s disease patient affected by normal pressure hydrocephalus (NPH) who presented a cerebrospinal fluid (CSF) pressure-dependent hearing impairment after shunting. This side-effect was not only reversible and reproducible but occurred at a high opening pressure when the valve setting was lowered by only 0.7 mmHg (10 mmH2O). This observation suggests that hearing in Menière’s disease might be very sensitive to small reductions of intracranial pressure (ICP) and that these patients should be informed of this potential risk, which can compromise the efficacy of the shunt.