THE NONINVASIVE ASSESSMENT OF INTRACOCHLE AR PRESSURE .3. CASE-REPORTS ON PATIENTS SUFFERING FROM INTRACOCHLEAR HYPERTENSION AND HYPOTENSION

It was the scope of two previous papers to outline the basics and poss ible neurotological applications of the tympanic membrane displacement technique (TMD) (6, 7). The present gager is aimed at briefly reviewi ng five distinct cases where a sudden sensorineural hearing loss with/ without tinnitus could be monitored by the TMD technique. These featur es include a sudden hearing loss upon lumbar puncture, the audiologica l manifestation of an internal hydrocephalus, stapes gusher and the ro und window rupture. All symptoms are based on a change in intracranial and intracochlear pressure which in turn leads to the manifestation o f the previously unknown sensorineural hearing loss and/or tinnitus.