An<unk>  <unk> , also known as a ventriculostomy or extraventricular<unk> , is a device used in neurosurgery to treat hydrocephalus and relieve elevated intracranial pressure when the normal flow of cerebrospinal fluid (CSF) inside the<unk>  is obstructed. An<unk>  is a flexible plastic catheter placed by a neurosurgeon or neurointensivist and managed by intensive care unit (ICU) physicians and nurses. The purpose of<unk> age is to divert fluid from the ventricles of the<unk>  and allow for monitoring of intracranial pressure. An<unk>  must be placed in a center with full neurosurgical capabilities, because immediate neurosurgical intervention can be needed if a complication of<unk>  placement, such as bleeding, is encountered.<unk> s are a short-term solution to hydrocephalus, and if the underlying hydrocephalus does not eventually resolve, it may be necessary to convert the<unk>  to a cerebral shunt, which is a fully internalized, long-term treatment for hydrocephalus.
External ventricular drain
Ventriculostomy
Endoscopic third ventriculostomy
Cerebrospinal fluid diversion
Lumbar–peritoneal shunt
Craniotomy
Decompressive craniectomy
Ventriculotomy 