Burr Hole Drainage

Overview

This procedure creates one or more holes in the skull to release excess fluid pressure in the brain caused by a chronic subdural hematoma (blood clot on the brain). It can be performed under local anesthesia.

Preparation

A portion of the head may be shaved, and the scalp is numbed with injections of local anesthesia. The patient is often mildly sedated during the injections.

Accessing the Brain

The surgeon makes a tiny incision in the scalp and drills one or two tiny holes through the skull, exposing the dura (the protective membrane around the brain). The dura is then opened with a small scalpel.

Draining the Fluid

The opening allows the fluid to drain from inside the skull, reducing pressure. Saline may be injected to help wash out the fluid.

End of Procedure and After Care

The wound is closed with sutures (in some cases, the surgeon may need to place a drain in the hole so that the fluid can continue to flow). The patient will continue to be closely monitored.

Please be aware that this information is provided to supplement the care provided by your physician. It is neither intended nor implied to be a substitute for professional medical advice. CALL YOUR HEALTHCARE PROVIDER IMMEDIATELY IF YOU THINK YOU MAY HAVE A MEDICAL EMERGENCY. Always seek the advice of your physician or other qualified health provider prior to starting any new treatment or with any questions you may have regarding a medical condition.