A nurse is caring for a patient scheduled for a maternal serum alpha-fetoprotein test at 15 weeks of gestation.
Which explanations about this test should the nurse provide to the patient?

Choice A rationale

While bile does play a role in digestion, it is not retained in the liver. Instead, it is produced by the liver and stored in the gallbladder. When food enters the small intestine, the gallbladder releases bile to aid in the digestion of fats. However, this process is not directly related to heartburn during pregnancy.

Choice B rationale

During pregnancy, the body produces large amounts of the hormones progesterone and relaxin. These hormones tend to relax smooth muscle tissues throughout the body, including those in the gastrointestinal (GI) tract. As a result, food sometimes moves more slowly through the system, resulting in indigestion issues of all kinds, from that bloated, gassy feeling to heartburn. This is the correct answer because increased progesterone production does indeed cause decreased motility of smooth muscle, which can lead to heartburn.

Choice C rationale

While estrogen levels do increase during pregnancy, they do not directly cause an increase in the secretion of hydrochloric acid. Instead, the relaxation of the lower esophageal sphincter due to pregnancy hormones can allow stomach acid to flow back up into the esophagus, causing heartburn.

Choice D rationale

While it is true that the growing uterus can displace the stomach, especially in later stages of pregnancy, this is not the primary cause of heartburn. Heartburn is primarily caused by the relaxation of the lower esophageal sphincter, allowing stomach acid to flow back up into the esophagus.

Choice D rationale

Facial edema, or swelling, can be a sign of preeclampsia, a serious pregnancy complication characterized by high blood pressure. It is important for pregnant women to seek medical attention if they notice sudden or severe swelling in their face, hands, or fingers.