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Case Reports
. 2009 Jun;36(3):345-8.
doi: 10.1016/j.anl.2008.05.016. Epub 2008 Sep 5.

Case report: two cases of hearing impairment due to intracranial hypotension

Masakatsu Taki  1 , Fumiaki Nin, Tatsuhisa Hasegawa, Hirofumi Sakaguchi, Satoshi Yamamoto, Toshihiro Suzuki, Yasuo Hisa
Affiliations
Case Reports

Case report: two cases of hearing impairment due to intracranial hypotension

Masakatsu Taki et al. Auris Nasus Larynx. 2009 Jun.

Abstract

We report two cases of spontaneous intracranial hypotension (SIH) that presented with orthostatic hearing impairment. Pure tone audiometry in case 1 and distortion-produced otoacoustic emissions (DPOAEs) in case 2 clearly revealed orthostatic low-frequency hearing impairment. The symptoms resolved with conservative therapy in case 1, but they did not resolve completely after three treatments with epidural blood patch in case 2. The orthostatic changes at low-frequency that were present in both examinations indicated a relative endolymphatic hydrops due to SIH. Both otological examinations were useful to infer the pathophysiology of hearing impairment associated with SIH.

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