EVD in Traumatic Brain Injury: Device Considerations for Trauma

In severe traumatic brain injury, an external ventricular drain lets the team measure intracranial pressure and drain cerebrospinal fluid to help control it. Trauma programs therefore look for EVD systems that support placement in difficult anatomy, consistent leveling over a long ICU stay, secure handling during frequent transports and a catheter choice that matches their protocol.

Traumatic brain injury (TBI) is a leading reason for EVD placement in Level I and Level II trauma centers. The clinical decisions belong to neurosurgery and neurocritical care, guided by evidence-based guidelines such as those of the Brain Trauma Foundation. The device decisions, however, are shared with nursing, supply chain and value analysis, and they are where distributors can contribute. This article looks at the device considerations that are specific to TBI.

Why do trauma programs use EVDs in TBI?

Raised intracranial pressure is a central concern in severe TBI, and guideline-based management includes ICP monitoring in appropriate patients. An EVD is one of the options for monitoring, with the added ability to drain CSF as a treatment step. Other monitoring devices measure pressure but cannot drain. The choice between them is clinical, and many trauma programs use both depending on the patient.

The fourth edition of the Brain Trauma Foundation guidelines also discusses how CSF drainage is used, including continuous and intermittent approaches. For the device, that means the system must support the drainage routine the team chooses and allow pressure to be measured reliably when the team needs it.

What makes placement harder in TBI?

Diffuse brain swelling after trauma often compresses the ventricles, so the target is smaller than in hydrocephalus. Placement may be done urgently at the bedside or in the OR during another procedure, such as evacuation of a hematoma or a decompressive craniectomy. Surgeons in this situation value:

• A catheter that handles predictably during insertion and tunneling.
• Clear length marks to control and record insertion depth.
• Radiopacity, so that position can be confirmed promptly on CT.
• A complete kit that can be opened and assembled quickly.

Small ventricles also mean that the first imaging after placement is especially important. The team wants to see the catheter tip and trajectory clearly and to relate them to the depth recorded at insertion. A catheter that is visible along its whole length, with distinct marks, makes that check faster for the neurosurgeon and the radiologist alike.

The ventricular catheter kit offers a radiopaque silicone catheter with tantalum length marks from 5 to 15 cm and 24 drainage holes in four rows, in standard or antibiotic-impregnated versions. For bedside placement, the EVD-010 Series arrives as a configured system with a 31 cm ventricular catheter, a 30 cm measuring scale, a 150 ml drip chamber and an 800 ml drainage bag.

How does ICP monitoring shape the system?

When an EVD is used to measure ICP, the reading depends on correct leveling of the reference point and, where a transducer is used, correct zeroing. When the drain is open, the pressure reading may not reflect true ICP, so many teams close the drain briefly to read pressure, according to protocol. These routines happen many times a day and are performed by nurses who need a system that is easy to level and easy to read.

A distributor’s contribution is to make sure nurses understand the scale, the drip chamber and the clamps on the system they use, and to answer questions about connecting the system to monitoring equipment strictly from the Instructions for Use. Questions about how monitoring is integrated clinically belong to the neurocritical care team.

Consistency is the theme. In a trauma ICU, many different nurses care for the same patient over a long stay, often including float and agency staff. One system, one scale and one routine across the unit reduce the risk that leveling or clamping is done differently from shift to shift.

What does a polytrauma patient demand of the device?

Patients with severe TBI often have other injuries. They travel to CT repeatedly, to the OR for orthopedic or abdominal procedures, to interventional radiology and sometimes between hospitals. Each trip tests the drainage system:

Training should reflect these situations. Include transport and hand-over modules in the in-service, and offer short sessions to CT technologists and OR teams who handle trauma patients with drains.

How should catheter choice be handled in a trauma program?

TBI patients may keep their drain for an extended period, and trauma programs often include catheter selection in their infection prevention bundle. DESU offers standard catheters and orange antibiotic-impregnated catheters designed to release the agent in a controlled way over 28 days. Some programs use the antibiotic-impregnated version for every drain; others reserve it for patients expected to need longer drainage. The program decides, and the distributor ensures both versions are stocked in every location where drains are placed, with clear labeling.

Catheter choice also affects documentation. Trauma registries and quality programs collect detailed data on each patient, and infection prevention teams track drain-related infections. When the catheter version and lot are recorded at placement, the program can later review its own experience with each version. The orange color of the antibiotic-impregnated catheter and distinct item codes make that recording straightforward, even during an emergency placement at night.

What about pediatric trauma?

Pediatric trauma centers follow their own guidelines, including the pediatric severe TBI guidelines, which also address CSF drainage. Pediatric teams ask additional questions about catheter configurations, small CSF volumes and line security on active children. Distributors serving pediatric trauma should confirm suitable configurations with DESU’s product specialists before quoting and should involve pediatric nurse educators early.

How should stock be organized for trauma?

Trauma means unpredictable demand. A stocking plan for a trauma program should cover:

• Emergency department: at least one complete EVD system always reachable, in the catheter version the protocol specifies.
• Neuro-ICU or trauma ICU: complete systems in both catheter versions, with par levels set from placement data plus a buffer for surges.
• Operating rooms: catheter kits and collection systems for drains placed during other procedures.
• Replacement components for long stays, where available in your market.
• An expiry watch list for low-use locations, with rotation to busier ones.

Where a program manages lumbar drains as well, for example for CSF leaks after skull base fractures, the EVD-020 Series, which is used with a ventricular or a lumbar catheter, allows one collection system for both routes.

Why should a trauma program evaluate DESU?

DESU is a neurosurgery manufacturer founded in 2007 in Ankara, Türkiye, with production in its own cleanrooms under ISO 13485 and CE-marked products exported to more than 50 countries. Its EVD range covers configured ventricular systems, a collection system for ventricular or lumbar catheters, catheters in two versions and the shunts many patients need later. For a trauma program, the practical benefit is direct access to the manufacturer for documentation, technical answers and training support.

Talk to a DESU product specialist

If you support a trauma program and want to discuss EVD configurations, catheter options and stocking for TBI care in your market, DESU’s product specialists can help. Email sales@desu.tr or use the contact page.