A nurse is teaching about nutrition during pregnancy. Which statements indicate correct understanding? (Select all that apply)

The GTPAL acronym is a standardized clinical tool used to document a woman’s obstetric history with precision. It tracks the total number of pregnancies and the specific outcomes of each, including gestational age at delivery. This data is vital for assessing obstetric risk in current and future pregnancies.

A. Fetal measurements: Anthropometric data such as crown-rump length or biparietal diameter are recorded during ultrasonography, not via the GTPAL system. These metrics assess fetal growth and developmental milestones. GTPAL focuses on the mother's historical reproductive events rather than current fetal size.

B. Lab values: Biochemical assessments like hemoglobin levels or blood type are separate components of the prenatal record. While important for clinical management, they are not captured by the GTPAL mnemonic. This tool is strictly for recording pregnancy occurrences and their timing.

C. Pregnancy history: GTPAL stands for Gravidity, Term births, Preterm births, Abortions, and Living children. This comprehensive summary allows providers to see at a glance the patient's reproductive performance and previous complications. It is the standard method for recording a longitudinal obstetric history.

D. Weight gain: Maternal weight changes are monitored using a gestational-tracking chart to ensure adequate nutrition and fetal development. These figures are recorded in kilograms or pounds during each visit. GTPAL does not include any data regarding maternal morphology or nutritional status.

Amniotic fluid is a dynamic medium composed primarily of fetal urine and lung secretions in later pregnancy. It maintains a constant temperature and facilitates symmetrical growth of the fetus by preventing adhesions. It also plays a vital role in pulmonary development through fetal breathing movements.

A. Produces hormones: The production of gestational hormones like progesterone and hCG is the primary function of the placental unit and the corpus luteum. Amniotic fluid serves as a reservoir for some hormones but does not synthesize them. Its role is physical and protective rather than endocrine.

B. Cushions and protects the fetus: The fluid provides a buoyant environment that absorbs external mechanical shocks and prevents the umbilical cord from being compressed. This allows the fetus to move freely, which is essential for musculoskeletal development. It acts as a primary physical barrier.

C. Prevents maternal infection: The primary barriers against infection are the cervical mucus plug and the intact chorioamniotic membranes. While the fluid contains some antibacterial properties, its main purpose is not the immunological protection of the mother. It focuses on the fetal environment.

D. Regulates maternal BP: Maternal blood pressure is controlled by systemic vascular resistance and autonomic regulation, independent of the amniotic fluid volume. While conditions like polyhydramnios can cause discomfort, the fluid itself has no hemodynamic regulatory function for the maternal system.