Which pregnant woman should restrict her weight gain during pregnancy?

Choice A reason: Eating five small meals daily can help reduce heartburn in pregnancy by preventing overeating and reducing the pressure on the stomach from the growing uterus. It can also help maintain a steady blood glucose level and prevent nausea and vomiting.

Choice B reason: Lying down after each meal can worsen heartburn in pregnancy by allowing the stomach acid to reflux into the esophagus. It can also cause breathing difficulties and increase the risk of aspiration. The woman should avoid lying down for at least two hours after eating and elevate her head and chest when sleeping.

Choice C reason: Reducing the amount of fiber she consumes can cause constipation and hemorrhoids in pregnancy, which can increase the discomfort and pain. Fiber is important for maintaining a healthy digestive system and preventing gestational diabetes and preeclampsia. The woman should consume at least 25 grams of fiber per day from fruits, vegetables, whole grains, beans, and nuts.

Choice D reason: Substituting other calcium sources for milk in her diet can deprive the woman and the baby of essential nutrients, such as protein, vitamin D, and riboflavin. Milk is not a common cause of heartburn in pregnancy, unless the woman is lactose intolerant or allergic to dairy products. The woman should consume at least three servings of dairy products per day or take calcium supplements as prescribed.

Choice A reason: Genetic changes and anomalies are not the most dangerous effect, as they are rare and not directly caused by smoking. Smoking can increase the risk of some birth defects, such as cleft lip and cleft palate, but these are not genetic changes and can be corrected by surgery. Smoking can also cause chromosomal abnormalities in the eggs, but these usually result in miscarriage or stillbirth, not live births.

Choice B reason:Maternal smoking is a significant risk factor for intrauterine growth restriction (IUGR). Nicotine and carbon monoxide from cigarettes reduce oxygen supply to the fetus, leading to lower birth weights and smaller body lengths.

Choice C reason: Fetal addiction to the substance inhaled is not the most dangerous effect, as it is not permanent and can be treated by medication and supportive care. Smoking can expose the fetus to nicotine, carbon monoxide, and other harmful chemicals, which can cross the placenta and affect the fetal brain and nervous system. Smoking can also cause withdrawal symptoms in the newborn, such as irritability, tremors, and difficulty feeding.

Choice D reason:Although prenatal exposure to smoking can affect neurodevelopment and is associated with behavioral issues, extensive central nervous system damage is not the most immediate or dangerous effect. The most critical concern remains intrauterine growth restriction.