PT Journal AU Chia, S Chia, K Chia, H Ong, C Jeyaratnam, J TI Three-year follow-up of serial nerve conduction among lead-exposed workers SO Scandinavian Journal of Work, Environment & Health PD 10VL PY 1996 BP 374 EP 380 IS 5 DI 10.5271/sjweh.157 WP https://www.sjweh.fi/show_abstract.php?abstract_id=157 DE blood lead; follow-up study; nerve conduction; serial result SN 0355-3140 AB '

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OBJECTIVES ': 'The purpose of this study was to investigate the serial nerve conduction parameters of a group of lead-exposed workers and determine their correlation with the serial blood lead results over a three-year period. A "nonresponse" level (defined as no significant changes in the nerve conduction in response to changes in the blood lead level of each exposed worker observed over the period of study) was also determined for blood lead in respect to the peripheral nerves.'

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METHODS ': 'Seventy-two male workers from a lead battery manufacturing factory were followed at six-month intervals for three years. At each follow-up, the blood lead level was determined and nerve conduction tests (ulnar and median nerves) were conducted. A group of 82 unexposed subjects served as referents.'

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RESULTS ': 'Significant differences were observed for some of the mean values of the median nerve conduction parameters between the exposed and reference groups. The 28 exposed workers who completed the follow-up were divided into the following two blood lead categories: ER