A neonate receives a diagnosis of hydrocephalus. The pediatric nurse assesses for congenital anomalies related to this condition. Which condition is inconsistent with the nurse's knowledge of hydrocephalus?
A.
Aqueductal stenosis
B.
Chiari I and II malformations
C.
Dandy-Walker malformation
D.
Folic acid deficiency
ANS: D
Hydrocephalus develops when an impedance to cerebrospinal fluid (CSF) flow or absorption is present. It rarely occurs as a result of the overproduction of CSF. Congenital anomalies, including Chiari I and II malformations, Dandy-Walker malformation, and aqueductal stenosis, are the most common causes of hydrocephalus during the neonatal and early infancy periods. Acquired hydrocephalus occurs after birth and in infancy, usually resulting from intraventricular hemorrhage due to prematurity. Folic acid deficiency is related to neural tube deficits.
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