An opening into the ventricles of the brain, such as by inserting a small, thin, hollow catheter.

a surgical procedure that drains cerebrospinal fluid from the brain by creating an opening in one of the small cavities called ventricles.

The surgical opening in a ventricle of the brain to drain cerebrospinal fluid, especially in hydrocephalus.

Ventriculostomy is a neurological surgical procedure. It is done by surgically placing a tube through the skull such that it terminates in the ventricle of the brain. Ventriculostomy is done primarily to monitor the intracranial pressure as well as to drain CSF, Blood etc to releive pressure from the CNS.