A nurse is reinforcing teaching with a client who is at 15 weeks of gestation and is about to undergo an amniocentesis. The nurse should reinforce that this test can identify which of the following traits or problems? (Select all that apply.)

Choice A rationale: A gynaecoid-shaped pelvis is considered the most favorable for childbirth and is not a contributing cause of difficult, prolonged labor.
Choice B rationale: The fetal lie refers to the orientation of the baby's spine in relation to the mother's spine. A longitudinal lie (baby's spine parallel to the mother's spine) is the typical and preferred position for birth and is not a cause of difficult, prolonged labor.
Choice C rationale: A persistent occiput posterior (OP) position, where the baby's head faces the mother's abdomen instead of her back, is a known contributing factor to difficult and prolonged labor. The baby's position in the birth canal can affect the progress and ease of labor.
Choice D rationale: Fetal attitude refers to the position of the baby's body parts in relation to each other. General flexion, where the baby's head is flexed forward and the limbs are flexed, is the normal attitude for birth and does not contribute to difficult, prolonged labor.

Choice A rationale; Erythema toxicum is a common rash that appears in many newborns and is not a cause for concern. It presents as small red bumps or pustules on the skin and usually resolves on its own without treatment.
Choice B rationale: A Mongolian spot is a birthmark that appears as a bluish-gray or bruise-like patch on the baby's skin, often on the back or buttocks. It is a benign condition and does not require any medical intervention.
Choice C rationale: Telangiectatic nevi, also known as "stork bites" or "angel kisses," are flat, pink, or red birthmarks that are common in newborns. They are usually found on the eyelids, forehead, and back of the neck. These birthmarks are harmless and typically fade over time without treatment.
Choice D rationale: Jaundice is a common condition in newborns and is caused by elevated levels of bilirubin in the blood. In most cases, mild jaundice is not harmful and resolves on its own. However, if the baby's skin and sclera (white part of the eyes) show significant yellowing, it may indicate a higher level of bilirubin, which can lead to complications if not properly managed. Therefore, the nurse should report this finding to the provider for further evaluation and appropriate treatment if necessary.