Assertion: arteriovenous shunt | /r/HasProperty | needed
Facets:
value: to prevent brain injury
type: PURPOSE
value: often
type: DEGREE
Source sentences:
text: If it’s determined a spinal shunt is needed to restore normal CSF flow, the device is placed between two adjacent vertebrae in the lumbar (lower) spine.
text: A hydrocephalus shunt is often necessary to prevent brain injury and allow those with dwarfism to lead a normal life.