问题
单项选择题
The nurse caring for a 3-day-old neonate notices that he looks slightly jaundiced. Although not a normal finding, it’s an expected finding of physiologic jaundice and is caused by which of the following（）
A. Poor clotting mechanism.
B. High hemoglobin (Hb) levels between 14 and 20 g/dL per 100 mL of blood.
C. Persistent fetal circulation.
D. Large, immature liver.
答案
参考答案：D
解析：
The primary cause of neonate jaundice is the immaturity of the liver and its inability to break down red cells effectively. Poor clotting mechanisms, elevated Hb, and persistent fetal circulation contribute to the jaundice but aren’t causes of it.