Where should EVD be placed?

Where should EVD be placed?

The ideal location for EVD placement is the frontal horn of the right lateral ventricle, near the foramen of Monro. A left frontal location may be considered when right frontal placement is not possible owing to intracranial pathological findings.

What is emergent EVD?

An external ventricular drain (EVD), also known as a ventriculostomy or extraventricular drain, is a device used in neurosurgery to treat hydrocephalus and relieve elevated intracranial pressure when the normal flow of cerebrospinal fluid (CSF) inside the brain is obstructed.

Where can you zero EVD?

The zero reference point for an EVD is level with the Intraventricular Foramen (Foramen of Munro), located at the beginning of the third ventricle.

How is EVD inserted?

A surgeon inserts the EVD during surgery. Once your child receives medicine to help them sleep, a healthcare provider will shave a small area of their head. The surgeon makes an opening in the shaved skin and then makes a small opening in the skull to insert the tube into a ventricle (fluid-filled area).

Why do we zero the EVD at the tragus?

‘Zero’ level defined by the tragus of the ear (at FORAMEN OF MAGENDIE) The objective is to use a ventriculostomy catheter and the EVD system to remove excess CSF and maintain normal CPP, while avoiding a rapid drop in ICP, which could cause re-bleeding.

Can you measure ICP with an EVD?

There are two types of ICP monitoring, a direct ICP monitor (Codman™) or via an EVD. An ICP monitor is utilized when ICP monitoring is needed without the need to drain CSF, e.g. investigation of headache. ICP monitoring can also be conducted via an EVD with the benefit of being able to drain excess CSF when necessary.

Is EVD placement a surgery?

Insertion of an external ventricular drain (EVD), also known as ventriculostomy catheter, is the routine surgical treatment for hydrocephalus and raised intracranial pressure.