Correct Answer: B

Rationale: Chloasma, also known as the mask of pregnancy, is a blotchy, brown hyperpigmentation of the skin over the cheeks, nose, and forehead. It is most common in dark-skinned women and is caused by an increase in melanotropin during pregnancy. This condition typically appears after 16 weeks of gestation and gradually increases until delivery for 50 to 70% of women. The nurse should reassure the client that this is an expected occurrence, which usually fades after delivery. Therefore, explaining to the client that this is an expected occurrence is the appropriate action in this situation. Options A, C, and D are incorrect because chloasma is a common skin change during pregnancy and does not require a referral to a dermatologist, an increase in vitamin D intake, or suspicion of an allergy to skin care products.

Correct Answer: A

Rationale: Late decelerations are indicative of uteroplacental insufficiency, which can be exacerbated by oxytocin administration, potentially compromising fetal well-being. Therefore, detecting late decelerations should prompt immediate reporting to the provider to prevent harm to the fetus. Choices B, C, and D are not contraindications for initiating oxytocin infusion. Moderate variability of the FHR is a reassuring sign of fetal well-being, cessation of uterine dilation may indicate a pause in labor progress but does not contraindicate oxytocin, and prolonged active phase of labor may necessitate oxytocin administration to augment contractions and progress labor.

Correct Answer: A

Rationale: It is crucial to cover the newborn's eyes with an opaque eye mask to prevent damage to the retinas and corneas from the phototherapy light. The eyes are particularly sensitive to the light used in phototherapy, and shielding them helps protect the newborn's delicate eyes from potential harm. Choice B is incorrect because the newborn should be undressed to maximize skin exposure to the phototherapy light. Choice C is incorrect because lotions or oils can interfere with the effectiveness of phototherapy. Choice D is incorrect because the newborn should be kept as still as possible to maximize exposure to the light.

Correct Answer: C

Rationale: The correct action is to monitor the client's blood pressure every 5 to 10 minutes following the first dose of anesthetic solution to assess for maternal hypotension. This is crucial to detect and manage potential complications associated with the epidural anesthesia. Positioning the client supine for a prolonged period can lead to hypotension; administering dextrose solution is not a standard practice in epidural anesthesia; ensuring NPO status for 4 hours is not necessary before epidural placement.

Correct Answer: B

Rationale: A newborn's respiratory rate can vary between 20 to 100 breaths per minute during the initial phase after birth. A respiratory rate as low as 18 breaths per minute at this early stage requires immediate nursing intervention. This finding necessitates further assessment to ensure adequate oxygenation and respiratory function. The other options, heart rate of 168/min, tremors, and fine crackles, are within normal limits for a full-term newborn and do not require immediate intervention.