Antibiotic Linked to Newborns' Intestinal Disorder

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A study conducted by Indiana University School of Medicines confirmed a linkage between erythromycin, one of the most commonly prescribed antibiotics, and the subsequent development of pyloric stenosis, a condition that affects one in 500 new-borns. The study appears in the current issue of the Journal of Pediatrics.

Pyloric stenosis, which usually occurs in the first or second month of life, is a blockage of the outlet of the stomach that causes projectile vomiting, leading to weight loss and dehydration. It is the most common indication for abdominal surgery in infancy.

"The link between erythromycin and pyloric stenosis is an important finding which will make a difference to the health of babies," said the study's principal investigator, Barbara E. Mahon, a clinical assistant professor of pediatrics at the IU School of Medicine.

The researchers studied 14, 876 babies born between June 1993 and Dec 1999.They found that if given erthromycin during the first two weeks of life, babies were 10.5 times more likely to develop pyloric stenosis than babies who were not given the antibiotic.

The newborns were given erthromycin by mouth in a 10-to-14 day course, usually because of maternal chlamydia at the time of delivery. Erythromycin has had a long history as a useful, safe, and generally well-tolerated drug, the researchers reported. However, as a result of their study they say that the antibiotic should be used only with prudence in the first two weeks of life.

The IU School of Medicine study also showed that babies who received an erythromycin eye ointment, a common treatment for conjunctivitis, did not have a higher risk of pyloric stenosis.


Source

Chronicle Pharmabiz, October 11, 2001