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[The diagnostic value of TEOAE-glycerine test in patients with vertigo on the first attack].

OBJECTIVE
To investigate the diagnostic value of transiently evoked otoacoustic emissions (TEOAE) combined with glycerine test in patients with vertigo on the first attack.


METHOD
PTT and TEOAE-glycerine test were conducted on the 28 patients who suffered the first attack of vertigo without hearing loss, tinnitus or a sensation of fullness in the ear. At the same time, history and clinical manifestation of the patients were not supportive for the non-Meniere's disease.


RESULT
Among the 28 cases, four of them had nothing changed on the PTT and TEOAE parameters after glycerol administration, all of the indexes were in the normal range. Among the 20 positive cases in the TEOAE-glycerine test (unilateral ear 16 cases, bilateral ears 4 cases), TEOAE for 2 cases were not evoked before glycerol administration, while it was evocable after glycerol administration. For the positive ears, all of the parameters of TEOAE were lower than those in the normal standard before and after glycerol administration; there were 4 positive cases in the PTT glycerine test, however, both TEOAE were not evoked before and after glycerol administration.


CONCLUSION
TEOAE-glycerine test can be used as a routine method for the early diagnosis of Meniere's disease and differentiating diagnosis in the patients who suffer vertigo on the first attack with normal hearing.