问题
单项选择题
The nurse is caring for a neonate 12 hours after birth. Which clinical manifestation would be the earliest indication that the neonate may have cystic fibrosis
A．Steatorrhea.
B．Meconium ileus.
C．Decreased sodium levels.
D．Rhinorrhea.
答案
参考答案：B
解析：In cystic fibrosis, the small intestine becomes blocked with thick meconium; therefore, meconium ileus is the earliest indication that a neonate has the disorder. Steatorrhea may be present later and may be used as a guideline for administration of pancreatic enzymes. Infants and children with this disorder have increased sodium levels, and rhinorrhea isn't usually present.