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Lead intoxication in children in Birmingham

P R Betts, R Astley, D N Raine

    British Medical Journal
    |February 17, 1973
    PubMed

    Insights

    High blood lead levels in children are linked to severe health issues, including encephalopathy and anemia. Even levels previously considered safe may cause harm, necessitating medical intervention for elevated lead concentrations.

    Area of Science:

    • Pediatric Toxicology
    • Environmental Health

    Background:

    • Blood lead levels previously considered harmless (37-60 mug/100 ml) are now associated with anemia in children.
    • Lead intoxication can manifest with severe neurological symptoms and even death.

    Purpose of the Study:

    • To investigate the relationship between blood lead concentrations and adverse health outcomes in children.
    • To establish critical blood lead level thresholds for intervention.

    Main Methods:

    • Retrospective analysis of 38 children with blood lead concentrations > 37 mug/100 ml between 1966-1971.
    • Clinical assessment including neurological examination and radiological evaluation for lead intoxication.

    Main Results:

    • Eight out of 38 children developed encephalopathy, with one fatality, all exhibiting blood lead levels >= 99 mug/100 ml.
    • Anemia was common in children with blood lead levels ranging from 37-60 mug/100 ml.
    • Radiological signs of lead intoxication were observed in children with blood lead levels > 60 mug/100 ml.

    Conclusions:

    • Blood lead levels exceeding 37 mug/100 ml warrant consideration for treatment.
    • Unexplained encephalopathy in children should prompt investigation for lead intoxication.
    • Current accepted safe levels for blood lead concentrations in children may be too high.

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