Clinical toxicology (Philadelphia, Pa.) · 2018
Elevated lead level from a tobacco source requiring chelation in a 12-year-old child.
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El Zahran Tharwat, Ralston Aaron, King Alexandra, Hindman Diane, Morgan Brent W
Аннотация
CONTEXT: Across the world, tobacco is used in a variety of forms, including being smoked or added to a "quid" that is then chewed. We report a case of lead poisoning in a child from tobacco imported from Thailand.
CASE DETAILS: A 12-year-old Thai immigrant boy had a blood lead level (BLL) of 6 mcg/dL on routine testing upon arrival to the United States, but which increased to 72 mcg/dL six months after his arrival. He was asymptomatic with unremarkable workup. At this time his father, mother and two siblings were also found to have elevated BLLs of 53, 16, 22, and 11 mcg/dL, respectively. Water, paint, food and cookware sources tested negative for lead, whereas samples of the father's dried tobacco leaves imported from Thailand contained 36.12 ppm (mcg/g) of lead. The mother admitted that both she and the patient used the tobacco as well. The child was chelated with oral succimer and his BLL decreased.
DISCUSSION: In our case, the source of the lead exposure was from the tobacco that the patient was chewing. Tobacco is often overlooked as a source of lead exposure, though it has been reported in the literature, both from direct smoking and from chewing, as well as through secondhand smoke. Toxicologists and health care professionals should consider cultural practices when evaluating patients with elevated BLLs.
CASE DETAILS: A 12-year-old Thai immigrant boy had a blood lead level (BLL) of 6 mcg/dL on routine testing upon arrival to the United States, but which increased to 72 mcg/dL six months after his arrival. He was asymptomatic with unremarkable workup. At this time his father, mother and two siblings were also found to have elevated BLLs of 53, 16, 22, and 11 mcg/dL, respectively. Water, paint, food and cookware sources tested negative for lead, whereas samples of the father's dried tobacco leaves imported from Thailand contained 36.12 ppm (mcg/g) of lead. The mother admitted that both she and the patient used the tobacco as well. The child was chelated with oral succimer and his BLL decreased.
DISCUSSION: In our case, the source of the lead exposure was from the tobacco that the patient was chewing. Tobacco is often overlooked as a source of lead exposure, though it has been reported in the literature, both from direct smoking and from chewing, as well as through secondhand smoke. Toxicologists and health care professionals should consider cultural practices when evaluating patients with elevated BLLs.