RN Maternal Nursing OB Newborn 2023 2024 Exam -Nurselytic

Correct Answer: D

Rationale: The correct answer is D: Oxytocin. Oxytocin is responsible for triggering milk ejection during breastfeeding by causing the contraction of muscles around the milk-producing cells, facilitating the release of milk. Progesterone and estrogen are involved in preparing the body for pregnancy and maintaining the uterine lining, not milk ejection. Prolactin stimulates milk production but not milk ejection directly.
Therefore, the correct choice is oxytocin as it specifically triggers the release of milk during breastfeeding.

Correct Answer: A

Rationale: The correct answer is A. The umbilical cord functions to transport oxygen and nutrients from the mother to the fetus. This is crucial for the fetus's growth and development. B is incorrect because waste products are removed through the placenta, not the umbilical cord. C is incorrect as the umbilical cord does not regulate fetal temperature.
Choice D is incorrect as it includes all options, but only A is accurate.

Correct Answer: D

Rationale: The correct answer is D, "All of the above." Maternal obesity during pregnancy can lead to gestational diabetes due to insulin resistance, preterm labor due to increased risk of premature birth, and placental abruption due to higher rates of hypertension and vascular complications. Choosing A, B, or C individually would be incorrect as they are all potential complications associated with maternal obesity.

Correct Answer: B

Rationale: The recommended method for screening GBS during pregnancy is a rectovaginal culture. This method involves swabbing the rectum and vagina to detect GBS colonization. This is crucial because GBS can be transmitted to the newborn during delivery, leading to serious infections. Urine culture (choice
A) is not recommended for GBS screening as it does not accurately reflect vaginal colonization. Blood test (choice
C) and nasopharyngeal culture (choice
D) are also not appropriate for GBS screening during pregnancy. Rectovaginal culture is the gold standard method for identifying GBS colonization in pregnant women.

Correct Answer: B

Rationale: The correct answer is B: Fetal growth restriction. Oligohydramnios is a condition characterized by low amniotic fluid levels, which can lead to poor fetal growth due to decreased cushioning and space for the fetus to move and grow. This can result in intrauterine growth restriction and potential complications for the baby. Preterm labor (choice
A) can also be associated with oligohydramnios due to issues with placental function, but it is not a direct complication of low amniotic fluid levels. Polyhydramnios (choice
C) is the opposite condition of oligohydramnios and is not a potential complication of it.
Therefore, the correct answer is B as it directly relates to the impact of oligohydramnios on fetal growth.