The use of the underpressure chamber in the treatment of patients with Menière's disease.

Thirty-four Menière patients (43 ears) were treated in an underpressure chamber. Békésy audiometry and impedance audiometry were performed immediately before and after the exposure to underpressure. A hearing gain of more than 10 dB. was found in 19 per cent of the ears (8/43). In five ears this improvement lasted for a few days. Only one patient (2 per cent) reported a relief of tinnitus. In 9 out of the 30 patients (30 per cent) with recent vertiginous attacks a positive subjective effect on the vertigo was obtained.