Maternal Cocaine Use During Pregnancy: Effect on the Newborn Infant

To the Editor.— Hadeed and Siegel1 reported that cocaine use during pregnancy was associated significantly with growth retardation and microcephaly in newborn infants, but there was no increase in congenital malformation. The findings that cocaine use during pregnancy was associated with growth retardation and microcephaly were consistent with earlier studies.2,3 On the other hand, the finding that cocaine use during pregnancy was not associated with increased occurrence of congenital anomalies was not consistent with recent studies.4,5