Women who smoke during pregnancy are at greater risk for certain complications, including placental previa, placental abruption, and premature rupture of the membranes, and premature delivery. Furthermore, infants of mothers who smoke during pregnancy are more likely to be small for gestational age and are at greater risk of sudden infant death syndrome (SIDS).
A high proportion (47%–63%) of women who quit smoking during pregnancy relapse during the postpartum period.   Being able to identify those women at highest risk for relapse may help to devise strategies for preventing relapse.
In the November issue of Obstetrics & Gynecology, The American College of Obstetricians and Gynecologists (ACOG) has issued recommendations to providers regarding efforts to support smoking cessation in pregnant and postpartum women.
While many women who smoke successfully quit smoking during pregnancy, most of these women return to smoking within 12 months of delivery. Several studies have suggested that certain factors may increase the risk of postpartum relapse, including unwanted pregnancy, multiparity, and stressful life events. Two recent studies indicate that postpartum depressive symptoms may also increase the risk of smoking relapse after delivery.
Approximately 25% of American women of reproductive age smoke tobacco, and many continue to smoke during and after pregnancy despite the known potential harm to their own health and to their child’s health. These health threats remain after the child’s birth as the baby is exposed to nicotine and other toxins in both ambient air and breast milk.
