An adrenal gland in a man with an enlarged heart is part of a clinical study of patients who are having trouble breathing because of enlarged heart valves, researchers reported.
Lead levels in the adrenal glands of some patients who have enlarged heart veins are high, which means the fluid they secrete could contain lead, according to a study published Wednesday in the journal the Journal of the American Medical Association.
The study found elevated levels of lead in the blood of some of the patients, including an eight-year-old boy who had a blood lead level of 6.2 micrograms per deciliter (mg/dL).
Lead levels are generally considered safe for children under three, but the American Heart Association recommends testing for children older than 6.
An estimated 50,000 children in the U.S. have elevated lead levels, according the American Academy of Pediatrics, which has urged schools and communities to take steps to reduce lead exposure in children.
Lead exposure has been linked to health problems in children ranging from attention deficit hyperactivity disorder (ADHD) and attention deficit/hyperactivity disorder-related disorder (ADD/ADHD), to mental health issues.
The lead levels in a patient’s adrenal and other fluids can be monitored using the American Cardiovascular Association’s adrenalin vein test, which can detect levels of the lead-contaminated fluid that is present in the fluid.
It can also detect levels in blood samples that indicate lead levels.
The researchers who conducted the study did not know if the elevated lead level was due to lead-based paint, paint that may have been painted with lead-containing paint, or the paint itself.
“We don’t know what caused the elevated levels, but we are concerned,” said lead researcher Dr. Robert Burt, a professor of pediatrics at the University of Minnesota.
The research is one of the first to show elevated lead concentrations in the body of a child, said lead author Dr. David Dennison, a lead researcher at the Minnesota Center for Infectious Diseases.
Dr. Mark Wiegand, an assistant professor of obstetrics and gynecology at the Mayo Clinic in Rochester, Minn., said the findings are important because children who have lead in their blood are more likely to develop cardiovascular disease.
“Children are much more vulnerable to heart disease than adults, so the risk of heart disease is higher for kids,” he said.
“It is a very important step to look at.”
The research was conducted in children ages 6 months to 11 years, who were given blood samples.
Lead levels were measured at the time of the sample collection, and the lead levels ranged from 2.8 to 8.8 microgramts per decile in the samples, which is the level of lead that is considered dangerous for children.
The researchers found that most of the children tested positive, with about one in eight positive.
A higher lead concentration means the amount of lead contained in the urine is higher than that found in the breath.
Lead-based paints are more than 95% paint that contains lead, and can contain up to 20 times the amount in a person’s blood.
The U.N. recommends limiting exposure to lead paint by covering windows, attics and other areas that are likely to be exposed to lead dust, and putting the windows and attics in close proximity to children.
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