Brain Swelling after Severe TBI
Brain Edema, or Swelling, Causes a Harmful Rise in Intracranial Pressure
By Gordon S. Johnson, Jr.
Brain swelling is a potentially fatal condition that requires brain surgery much of the time. Without treatment, it can cause severe and permanent damage and disability.
Cortical Contusions
A cortical contusion is a bruise on the surface of the brain. The bruising forms a deposit of blood outside blood vessels which is damaging to brain tissue like neurons. The amount of fluid within the skull increases, raising up the intracranial pressure, which is a root cause of secondary brain damage. This occurs over the hours after the initial event. Just because it is secondary, does not mean it is less dangerous.
Epidural hematoma
An epidural hematoma occurs between the dura and the skull rather than on the surface of the brain. This is also a bruising that occurs which builds up blood between the dura mater and the skull.
Subdural hematoma
Subdural hematoma is a bruise between the dura and the brain. A pool of blood collects between the brain and its outer coating. The bleeding and increased pressure can be fatal.
Midline Shift
The brain consists of two symmetrical right and left hemispheres. If brain swelling occurs on one side of the brain, it drives that hemisphere across the vertical line in the center of the brain. This is called midline shift. It can be detected on a CT scan. It is potentially life-threatening.