A breastfeeding mother asks the nurse, "Why do I feel so relaxed and sleepy every time I nurse my baby?". The nurse should explain that this sensation is related to which hormone that remains elevated in breastfeeding women?

Choice A rationale

Eating smaller and more frequent meals prevents the stomach from becoming overly distended, which significantly reduces the upward pressure on the lower esophageal sphincter. During the 34th week of pregnancy, the enlarging uterus displaces the stomach superiorly, making reflux more likely. By consuming smaller portions, the gastric volume remains low, which minimizes the amount of acidic chyme that can reflux into the esophagus, thereby providing relief from pyrosis or heartburn.

Choice B rationale

Carbonated beverages contain dissolved carbon dioxide which can expand within the stomach, leading to increased intragastric pressure. This pressure can force the lower esophageal sphincter to open inappropriately, allowing stomach acid to enter the sensitive esophageal lining. Furthermore, many carbonated drinks are acidic or contain caffeine, both of which can further irritate the gastric mucosa or relax the sphincter muscle. Avoiding these helps maintain a more stable and less pressurized gastric environment.

Choice C rationale

Lying down immediately after eating is counterproductive because it removes the beneficial effect of gravity, which normally helps keep gastric contents within the stomach. In a recumbent position, the horizontal orientation of the esophagus and stomach allows acidic gastric juices to flow more easily past the lower esophageal sphincter. This is especially problematic in late pregnancy when progesterone levels are high, as this hormone relaxes smooth muscles, including the esophageal sphincter.

Choice D rationale

Citrus fruits and juices possess a high citric acid content and a low pH, which can directly irritate the already sensitive esophageal mucosa. In a pregnant woman experiencing heartburn, these acidic foods can exacerbate the burning sensation upon contact. Additionally, some acidic foods may trigger increased gastric acid secretion. Avoiding these triggers is a standard non-pharmacological intervention to manage gastrointestinal discomfort and protect the esophageal lining from chemical irritation during the third trimester.

Choice A rationale

Fetal movement is a primary indicator of fetal well-being and placental function. A significant decrease or sudden change in the frequency and intensity of movements can signal fetal distress, hypoxia, or placental insufficiency. Nurses teach women to perform kick counts, typically expecting at least 10 movements within a 2-hour period. Any deviation from the established baseline for that specific fetus requires immediate medical evaluation via a non-stress test or biophysical profile to assess the intrauterine environment.

Choice B rationale

Dependent edema in the lower extremities is a common physiological finding in late pregnancy due to increased hydrostatic pressure in the legs and compression of the inferior vena cava by the uterus. While uncomfortable, it is usually not a danger sign if it resolves with elevation and is not accompanied by hypertension or proteinuria. Normal salt and water retention during the third trimester contributes to this. However, sudden edema of the face or hands would be a concerning sign.

Choice C rationale

Constipation is a frequent complaint during the third trimester resulting from high progesterone levels, which relax smooth muscles and slow intestinal peristalsis. The mechanical pressure of the enlarging uterus on the rectum also contributes to delayed transit time. While it can lead to discomfort and hemorrhoids, it is considered a common discomfort of pregnancy rather than a danger sign. It is managed with increased fluid intake, fiber-rich diets, and moderate physical activity to stimulate bowel movements.

Choice D rationale

Changes in hair growth cycles are common during and after pregnancy due to shifts in estrogen levels. During pregnancy, the high estrogen levels typically keep hair in the growing phase, leading to thicker hair, though some women may experience thinning due to stress or nutritional deficiencies. Significant hair loss is generally not classified as an acute danger sign of pregnancy complications like preeclampsia or preterm labor. It is usually a benign cosmetic concern that stabilizes after the postpartum period ends.