The prognostic value of the otoacoustic emission test in low frequency sudden hearing loss

Low frequency sudden hearing loss (LFSHL) is a frequent finding in the otological practice. Several prognostic indicators have been suggested concerning the prediction of the outcome of sudden hearing loss, but so far there are no proven factors to establish the prognosis. The aim of this study was...

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Bibliographic Details
Published in:European archives of oto-rhino-laryngology 2005-03, Vol.262 (3), p.208-212
Main Authors: CANALE, Andrea, LACILLA, Michelangelo, GIORDANO, Carlo, DE SANCTIS, Alice, ALBERA, Roberto
Format: Article
Language:English
Subjects:
Adult
Aged
Audiometry, Pure-Tone
Biological and medical sciences
Cochlea - physiopathology
Female
Hearing Loss, Sudden - diagnosis
Hearing Loss, Sudden - physiopathology
Humans
Male
Medical sciences
Middle Aged
Otoacoustic Emissions, Spontaneous - physiology
Otorhinolaryngology. Stomatology
Predictive Value of Tests
Prognosis
Severity of Illness Index
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Summary:Low frequency sudden hearing loss (LFSHL) is a frequent finding in the otological practice. Several prognostic indicators have been suggested concerning the prediction of the outcome of sudden hearing loss, but so far there are no proven factors to establish the prognosis. The aim of this study was to assess whether OAEs could be considered as a reliable prognostic test in LFSHL. The study group consisted of 20 patients presenting with a unilateral LFSHL. Each patient was submitted to spontaneous otoacoustic emissions (SOAEs), transient otoacoustic emissions (TEOAEs) and distortion products (DPOAEs) recording and then treated with glycerol administrated intravenously in 3-h intervals for 4 days. Pure tone audiometry (PTA) threshold was evaluated again 1 h after the last administration of glycerol. After osmotic therapy 12 patients (60%) showed a significant PTA improvement with a mean improvement of 11 dB; modifications were significant at the Student's t test for paired data (P
ISSN:0937-4477
1434-4726
DOI:10.1007/s00405-004-0739-7