In order to evaluate cochlear function in Type 1 diabetes mellitus, this study analyses otoacoustic emissions (OAEs) on normal hearing subjects with diabetes and on controls. Patients with Type 1 diabetes (n=60), with a mean age of 31±6.23 years, mean disease duration of 17.5±8.9 years, and mean HbA1c of 8.1±1.8%, of whom 43% had signs of retinopathy and 28% had clinical signs of neuropathy, were studied. All patients underwent an OAE analysis and brainstem-evoked potentials. Fifty-eight normal volunteers were used as controls for the OAE analysis. Seventeen patients (28.3%) had no OAEs in at least one ear and 10% in both ears. The mean intensity of the response was lower in diabetic subjects [7.1±4.4 vs. 10.9±9.3 dB SPL (sound pressure level)] than in controls. The cochlear impairment was over 5 dB for the 1-kHz frequency, which is the critical level for speech understanding. These findings suggest that cochleopathy can be detected in a relatively high proportion of subjects with Type 1 diabetes in spite of a normal audiometric hearing threshold.
Absence of otoacoustic emissions in insulin-dependent diabetic patients : Is there evidence for diabetic cochleopathy? / F. Ottaviani, N. Dozio, C.B. Neglia, S. Riccio, M. Scavini. - In: JOURNAL OF DIABETES AND ITS COMPLICATIONS. - ISSN 1056-8727. - 16:5(2002 Oct), pp. 338-343.
Absence of otoacoustic emissions in insulin-dependent diabetic patients : Is there evidence for diabetic cochleopathy?
F. OttavianiPrimo
;
2002
Abstract
In order to evaluate cochlear function in Type 1 diabetes mellitus, this study analyses otoacoustic emissions (OAEs) on normal hearing subjects with diabetes and on controls. Patients with Type 1 diabetes (n=60), with a mean age of 31±6.23 years, mean disease duration of 17.5±8.9 years, and mean HbA1c of 8.1±1.8%, of whom 43% had signs of retinopathy and 28% had clinical signs of neuropathy, were studied. All patients underwent an OAE analysis and brainstem-evoked potentials. Fifty-eight normal volunteers were used as controls for the OAE analysis. Seventeen patients (28.3%) had no OAEs in at least one ear and 10% in both ears. The mean intensity of the response was lower in diabetic subjects [7.1±4.4 vs. 10.9±9.3 dB SPL (sound pressure level)] than in controls. The cochlear impairment was over 5 dB for the 1-kHz frequency, which is the critical level for speech understanding. These findings suggest that cochleopathy can be detected in a relatively high proportion of subjects with Type 1 diabetes in spite of a normal audiometric hearing threshold.Pubblicazioni consigliate
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