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February 1984

The Effect of Impulse Noise on Cochlear Vessels

Author Affiliations

From the Department of Otolaryngology, University of Göteborg (Sweden) (Drs Vertes and Axelsson and Ms Hornstrand); and the Departments of Otolaryngology and Experimental Research, Malmö (Sweden) General Hospital, University of Lund (Sweden) (Dr Nilsson). Dr Vertes is now with the University of Texas Medical Branch, Galveston.

Arch Otolaryngol. 1984;110(2):111-115. doi:10.1001/archotol.1984.00800280045014

• Short- and long-term changes in the cochlear vasculature and long-term changes in the sensorineuroepithelium were studied in guinea pigs after they were exposed to impulse noise. Vessel histology and cochlear hair cell loss were assessed, using a surface-preparation technique, and the results showed considerable variability. Hair cell loss and radial tears in the organ of Corti were a common finding in the animals killed four weeks after impulse-noise exposure. Impulse-noise exposure resulted in few cochlear vascular changes in the acutely and chronically affected groups. Compared with the results of our previous studies using continuous-noise exposure of different characteristics and in different mammals, this impulse-noise experiment resulted in a nonsignificant damaging effect on the cochlear vasculature.

(Arch Otolaryngol 1984;110:111-115)

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