The development of occupational hearing loss under the influence of pulsed noise
Pankova, V.B.; Novikov, S.V.; Antipin, V.G.
Gigiena Truda i Professional'nye Zabolevaniya (8): 9-11
1992
ISSN/ISBN: 0016-9919 PMID: 1295803 Document Number: 390748
The deafness was studied in workers engaged into the weaving and the blacksmithing. Both groups of workers were exposed to the noise dose of 109 dB estimated according to Robinson's formula. Processing of received data in diminished hearing revealed the reliable difference between the studies groups both in quantity of the cochlear neuritis and the grade of the hearing failure. Slight hearing failure predominated in the weavers' group whereas the moderate and severe forms appeared in the blacksmiths. Analysis revealed the positive correlation between the overall noise dose and diminished hearing in all studied groups concerning high and voice frequencies. The impulsive noise appeared to be more aggressive than the constant one.