A nurse is caring for a newborn who is undergoing phototherapy to treat hyperbilirubinemia. Which of the following actions should the nurse take?

The correct answer is A.

A. Swelling of the face: Facial swelling, especially sudden or severe swelling, could be a sign of preeclampsia, a serious pregnancy complication characterized by high blood pressure and organ dysfunction. Any new or significant facial swelling should be promptly reported to the healthcare provider for evaluation.

B. Varicose veins in the calves: Varicose veins are a common occurrence during pregnancy due to increased pressure on the veins. While they can cause discomfort, they are generally not considered a significant concern unless there are signs of complications, such as inflammation or blood clots.

C. Nonpitting 1+ ankle edema: Mild ankle edema is relatively common during pregnancy and may not be concerning unless it becomes severe, sudden, or is associated with other symptoms. Nonpitting edema is generally less concerning than pitting edema but should still be monitored.

D. Hyperpigmentation of the cheeks: Hyperpigmentation, often referred to as the "mask of pregnancy" or melasma, is a common and benign condition during pregnancy. While it may be bothersome to some individuals, it is not typically a concern that requires immediate reporting to the provider.

The correct answer is C.

A. Acrocyanosis of the extremities: Acrocyanosis, or blueness of the extremities, is a common finding in newborns and is usually considered normal. It often resolves on its own and doesn't typically require intervention.

B. Murmur at the left sternal border: It's not uncommon for newborns to have innocent murmurs, and many resolve on their own as the infant grows. A murmur at the left sternal border alone may not necessarily indicate a problem, but it should be assessed by a healthcare provider.

C. Substernal chest retractions while sleeping: Chest retractions can be a sign of respiratory distress, and intervention is needed to assess and address the cause. Substernal retractions suggest increased work of breathing and may indicate a respiratory issue that requires attention.

D. Positive Babinski reflex: The Babinski reflex is a normal neurological response in infants. It involves the toes fanning out when the sole of the foot is stroked. A positive Babinski reflex is expected in a 12-hour-old newborn and does not require intervention.