It is generally agreed that tobacco smoking is harmful to pregnant women and their fetuses. Epidemiologic studies imply that smoking could account for 30% of all low-birth-weight babies and 6 to 10% of all perinatal deaths. The adverse effect of smoking may be secondary to increased nicotine, carbon monoxide, or cyanide levels or a combination of these and other harmful chemicals, which enter the bloodstream of people who smoke or become passively exposed to tobacco smoke from nearby smokers. The effect of tobacco smoking is dose dependent and more pronounced in older gravidas and other more susceptible groups. Health care providers should be fully aware of the adverse effect of smoking and make every effort to convince pregnant women to stop or at least decrease smoking during their pregnancy.
KeywordsMaternal Smoking Fetal Alcohol Syndrome Placenta Previa Placental Abruption Maternal Weight Gain
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