Polizzi S, Ferrara M, Pira E, Bugiani M
Dipartimento di Medicina del Lavoro, Università degli Studi di Torino.
G Ital Med Lav Ergon. 2003 Jul-Sep;25 Suppl(3):67-8.
We described a case of a male worker, 62 years old, with a combined exposure to low noise levels (80-85 dB Leq,A) and organic solvents mixture for more than 30 years in the automobile industry as a painter. His ear canal has a diameter of more than 1.3 cm. and determine a peculiar pattern of hearing loss, similar to the noise induced one, but chiefly in the speech frequencies. According to experimental and human studies we speculate that in this patient the peculiar morphology of the audiogram, with the low or mean frequencies maximally affected, may been explained by a synergistic effect of solvents mixture in conjunction with noise exposure and a high ear canal volume.
我们描述了一名62岁男性工人的案例，他在汽车行业担任油漆工超过30年，同时暴露于低噪声水平（80 - 85 dB Leq,A）和有机溶剂混合物环境中。他的耳道直径超过1.3厘米，呈现出一种特殊的听力损失模式，类似于噪声诱发的模式，但主要集中在言语频率。根据实验和人体研究，我们推测，在该患者中，听力图的特殊形态，即低频或中频受到最大程度影响，可能是由于有机溶剂混合物与噪声暴露以及耳道容积较大共同作用产生的协同效应所致。
