original_query: What is hypoxic ischemic encephalopathy (HIE)?
query: What is hypoxic ischemic encephalopathy (HIE)?
answer: Hypoxic ischemic encephalopathy (HIE) is a condition that occurs when the brain is deprived of an adequate oxygen supply, most commonly observed in newborn babies due to birth asphyxia.  It is the leading cause of cerebral palsy.