Infants with heavy prenatal cocaine exposure do as well on developmental tests in the first 2 years of life as those with lighter or no exposure, according to a report in the December issue of Pediatrics.
However, cocaine-exposed infants who are low birth-weight or are placed in foster care with a relative have an increased risk for lower test scores. In a prospective, longitudinal study, Dr. D. A. Frank, of Boston Medical Center, Massachusetts, and colleagues followed a total of 203 infants who were divided into three cocaine exposure groups based on maternal report and infant meconium assay: unexposed, heavier exposure, or lighter exposure. The researchers tested the infants at 6, 12, and 24 months of age with the Bayley Scale of Infant Development.
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