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  • Title: [Experimental endolymphatic hydrops and distortion otoacoustic emission].
    Author: Magliulo G, Cianfrone GC, Musacchio A, Vingolo G, Cuccaro A.
    Journal: Acta Otorhinolaryngol Ital; 1996 Jun; 16(3):261-6. PubMed ID: 9027203.
    Abstract:
    The present investigation was designed to measure distortion-product otoacoustic emissions (DPOAEs) in a group of guinea pigs with endolymphatic hydrops in order to obtain normative data in this particular field. The-DPOAE's results were compared with compound action potential (CAP) outcomes to analyze the value of DPOAE measurements in audiologic screening. Thirty albino guinea pigs were used. Recording sessions were performed before the hydrops and 10,17 and 24 days thereafter. DPOAE measurements showed specific patterns of alteration providing quantitative data of the severity of the impairment and the specific frequencies involved. The close relationship of the functional effects of hydrops on the results of CAPs and DPOAEs suggests the potential contribution of DP testing to monitor the progression of the cochlear dysfunction of the hydropic ear.
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