Prediction of hearing outcomes by distortion product otoacoustic emissions in patients with idiopathic sudden sensorineural hearing loss

Otoacoustic Emissions in the Prediction of Sudden Sensorineural Hearing Loss Outcome

“…On the other hand, Sakashita et al (33) found recordable OAEs in 68% of 25 patients whose hearing had improved. Mori et al (40) found significantly higher DPOAEs amplitude in the high-tone range for patients who finally improved their high-tone hearing. Schweinfurth et al (35) reported detectable DPOAEs in three of five patients whose hearing was significantly improved.…”

“…These include prolonged delay from onset of ISSNHL to patients' presentation (35,38), variability in the severity and audiometry patterns of the initial hearing loss (35,37,38), a history of previous episodes of hearing loss (37), differences in treatment protocols and the time to commencement of treatment (2,33Y38,40), vagueness in the selection of study participants (33,34,36,37) or biased selection (37Y39), and patient evaluation without an appropriate MRI study to exclude inner ear or cerebellopontine angle space-occupying lesions in some or all patients (33,34,36,38,40). These include prolonged delay from onset of ISSNHL to patients' presentation (35,38), variability in the severity and audiometry patterns of the initial hearing loss (35,37,38), a history of previous episodes of hearing loss (37), differences in treatment protocols and the time to commencement of treatment (2,33Y38,40), vagueness in the selection of study participants (33,34,36,37) or biased selection (37Y39), and patient evaluation without an appropriate MRI study to exclude inner ear or cerebellopontine angle space-occupying lesions in some or all patients (33,34,36,38,40).…”

Reversible hearing loss following cryptococcal meningitis: case study

“…6,7 The pattern of hearing loss may vary from mild to profound in severity, and may present unilaterally or bilaterally. This suggests that the presence of otoacoustic emissions may be a good predictor of hearing recovery, 10 and highlights the need for their inclusion in hearing assessments, especially in patients with SNHL following cryptococcal meningitis. In addition, the presence of otoacoustic emissions with reduced amplitudes and an absent auditory brainstem response suggests that the lesion was more pronounced in the inner hair cells, spiral ganglion cells or the auditory nerve itself, rather than in the outer hair cells.…”

Diagnostik und Therapie des Hörsturzes

“…Transitorisch evozierte otoakustische Emissionen und Distorsionsprodukte otoakustischer Emissionen sind von allgemeiner Bedeutung bei der Evaluierung der Schallempfindungsschwerhörigkeit [12]. Das Vorhandensein von OAE bei Messungen frühzeitig nach dem Hörsturz scheint eine gute Prognose für die Hörerholung anzuzeigen [13][14][15].…”