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Neurological studies on polychlorinated biphenyl (PCB)‐poisoned patients
Author(s) -
Chia LieGan,
Chu FuLi
Publication year - 1984
Publication title -
american journal of industrial medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.7
H-Index - 104
eISSN - 1097-0274
pISSN - 0271-3586
DOI - 10.1002/ajim.4700050110
Subject(s) - medicine , sensory nerve , nerve conduction velocity , polychlorinated biphenyl , sensory system , nerve conduction , anesthesia , neurological examination , motor nerve , surgery , anatomy , neuroscience , ecology , biology
Thirty‐five patients out of the 2,000 PCB‐poisoned cases that occurred in central Taiwan in 1978 were neurologically studied in 1980. Neurological manifestation included clinical peripheral sensory neuropathy in about two thirds of the cases, headache in two‐fifths and dizziness in one‐third. There was no relationship between the blood PCB concentration in patients with neurological manifestation and those without. Sensory nerve conduction velocity was reduced in about half of the cases and motor nerve conduction was delayed in about one‐third of the cases, which suggested that PCB poisoning apparently affected not only sensory nerve conduction but also motor nerve conduction. Normal CSF PCB concentrations (0.5–2.3 ppb) indicated that PCB had difficulty penetrating the blood‐brain barrier. A mildly abnormal EEG pattern was found in one fifth of twenty‐seven cases.