The purpose of the Bishop's score is to:

Choice A reason:

This statement is incorrect because special lights are used to treat jaundice, not PKU. Jaundice is a condition that causes yellowing of the skin and eyes due to high levels of bilirubin in the blood. Bilirubin is a waste product that is normally removed by the liver. Special lights help break down bilirubin so that it can be excreted from the body.

Choice B reason:

This statement is correct because PKU is a genetic disorder that can be corrected by diet. PKU is caused by a lack of an enzyme that breaks down phenylalanine, an amino acid found in protein-rich foods. Phenylalanine can build up in the blood and cause brain damage and other health problems if not treated. A diet that is low in phenylalanine and high in a special formula can prevent these complications.

Choice C reason:

This statement is correct because sometimes the test is repeated in the doctor's office at the 2-week check-up. The PKU test is done one to three days after birth, but it may not be accurate if the baby has not had enough protein in their diet before the test. A repeat test may be needed to confirm or rule out PKU.

Choice D reason:

This statement is incorrect because the baby must take formula or breast milk after the test is done, not before. The test measures the level of phenylalanine in the blood, which will be higher if the baby has eaten protein-rich foods. The test should be done after the baby has fasted for at least two hours.

Choice A reason:

Heat facilitates the drainage of mucus for a premature newborn. This is incorrect because heat does not affect mucus drainage. Mucus drainage is more related to suctioning and hydration.

Choice B reason:

The newborn has a small body surface for his weight. This is incorrect because a small body surface area for weight would indicate a large newborn, not a premature one. A large newborn would have less risk of heat loss than a small one.

Choice C reason:

The newborn's temperature control mechanism is immature. This is correct because premature newborns have immature thermoregulation and are prone to hypothermia. Placing the newborn in an incubator helps maintain a stable temperature and prevent further complications.

Choice D reason:

Heat increases the flow of oxygen to the newborn's extremities. This is incorrect because heat does not directly affect oxygen delivery. Oxygen delivery is more related to ventilation, perfusion, and hemoglobin levels. The question is about a premature newborn who has signs of respiratory distress, such as nasal flaring, intercostal retractions, expiratory grunting, and mild cyanosis. These signs indicate that the newborn is having difficulty breathing and may have a condition such as respiratory distress syndrome, transient tachypnea of the newborn, or meconium aspiration syndrome. The nurse should place the newborn in an incubator to provide warmth and prevent heat loss, which can worsen respiratory distress. The nurse should also monitor the newborn's vital signs, oxygen saturation, blood gases, chest x-ray, and neonatal abstinence scoring system if indicated. The nurse should be prepared to administer oxygen, surfactant, or mechanical ventilation as ordered.