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  • Title: Auditory brainstem evoked potentials (BAEPs) in lead-exposed workers.
    Author: Discalzi GL, Capellaro F, Bottalo L, Fabbro D, Mocellini A.
    Journal: Neurotoxicology; 1992; 13(1):207-9. PubMed ID: 1508421.
    Abstract:
    Brainstem Evoked Potentials (BAEPs) were recorded in 49 lead exposed workers, and in a control group of 49 age- and sex-matched subjects, never exposed to neurotoxic substances. The mean duration of lead exposure was 7.4 (SD 5.6) yr. Blood lead concentration was analyzed in the morning of the experimental day (PbBc); an averaged PbB level was based on the levels of the 3 previous years (PbBm). Interpeak latency differences (IPLD) I-V, I-III and III-V were considered. The mean PbBc level was 54.6 (SD 16.1) micrograms/dl while the mean PbBm level was 53.5 (SD 15.9) micrograms/dl. Lead exposed workers showed a significant prolongation of IPLDs. IPLD I-V was longer in the subgroup with PbBm greater than 50 micrograms/dl (4.06 vs 3.98, c.l. 95% 0.00-0.16). These results are consistent with literature data and show that BAEPs may be a sensitive detector of subclinical lead effects on brainstem auditory pathways.
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