Pregnant women should be carefully supervised

摘要

Babies of women who misuse opiates are more likely than others to be premature and of low birth weight.They may also show withdrawal symptoms after birth such as irritability,restlessness,tremor and a high pitched cry.These symptoms are collectively called "fetal absence syndrome".The symptoms are delayed if the mother was taking methadone as opposed to heroin,because methadone has a longer half-life (one to two days).