What is the role of electrophysiologic studies in the workup of mercury toxicity?

Updated: Nov 05, 2018
  • Author: David A Olson, MD; Chief Editor: Tarakad S Ramachandran, MBBS, MBA, MPH, FAAN, FACP, FAHA, FRCP, FRCPC, FRS, LRCP, MRCP, MRCS  more...
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Electrophysiologic studies have demonstrated sensorimotor neuropathy, typically axonal, in some workers exposed to elemental mercury or mercury vapors. Workers with remote exposures, however, have exhibited only minimal conduction velocity slowing. [88] Abnormalities have also been documented in visual-evoked potential studies among workers exposed to mercury vapors. [76]

In the Faroe Islands, intrauterine methylmercury exposure (as determined by maternal hair and cord blood measures) was positively correlated with prolonged brainstem evoked potentials (III and V latency peaks) 14 years after initial exposure. [89]

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