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Asthma Inhalers may Lead to Stunted Growth

by Sheela Philomena on September 4, 2012 at 10:56 AM
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 Asthma Inhalers may Lead to Stunted Growth

Kids who use inhaled steroid drugs for asthma are slightly shorter than peers, finds study.

This is the finding from a comprehensive asthma study, which has Robert C. Strunk, MD, the Donald Strominger Professor of Pediatrics at Washington University School of Medicine in St. Louis as the senior author.

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The study involved more than 1,000 children ages 5-12 who were treated for mild to moderate asthma as part of the Childhood Asthma Management Program (CAMP) clinical trial.

The children received treatment for more than four years at eight centers, including Washington University School of Medicine. They were divided into three groups: one received twice-daily budesonide, an inhaled corticosteroid medication; a second group received nedocromil, an inhaled non-steroid medication; and a third group received a placebo.
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All children received albuterol, a fast-acting drug for relief of acute asthma symptoms, and oral corticosteroids as needed for asthma symptoms.

The researchers followed 943 participants in the trial at regular intervals until they reached adult height. Females were considered to be at adult height at age 18 or older and males at age 20 or older, Strunk said.

In the first 4 1/2 years after the end of the trial, researchers took patients' height and weight every six months. Over the next eight years, height and weight were measured once or twice a year.

The mean adult height was about one-half inch, or 1.2 centimeters, shorter in the group that received budesonide than in the patients who received nedocromil or placebo. The patients who experienced the slower growth were primarily between 5-11 years old when they began using budesonide.

The slower growth took place only in the first two years of the four-year study. As the study progressed, the children who took the budesonide remained one-half inch shorter through adulthood than the children who did not use the drug, said Strunk, who treats children with asthma at St. Louis Children's Hospital.

"This was surprising because in previous studies, we found that the slower growth would be temporary, not affecting adult height. But none of those studies followed patients from the time they entered the study until they had reached adult height," Strunk stated.

Pediatric asthma specialists at St. Louis Children's Hospital keep a close watch on the growth of their patients who use inhaled steroids, Strunk said. They are measured at every visit, and physicians keep a growth curve.

"If a child is not growing as they should, we may reduce their steroid dose," he noted.

"But we think that the half-inch of lowered adult height must be balanced against the well-established benefit of inhaled corticosteroids in controlling persistent asthma. We will use the lowest effective dose to control symptoms to minimize concerns about effects on adult height," he added.

The findings will be presented at the European Respiratory Society meeting in Vienna, Austria, and published online in the New England Journal of Medicine.

Source: ANI
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