Acute Subdural Hematoma
An acute subdural hematoma is an accumulation of blood inside the skull. The blood accumulation is specifically located between the dura, the fibrous covering of the brain, and the brain itself. There is very little extra room within the skull, so the build-up of blood puts pressure on the brain.
What are the causes and risks of the injury?
Usually, an acute subdural hematoma occurs following head trauma. During impact, the brain moves around inside the skull. Veins may tear, spilling blood into the subdural space. As people age, brains shrink slightly, so veins are stretched. Thus, the elderly are more susceptible to this type of injury.
What can be done to prevent the injury?
Proper medical treatment of conditions that affect consciousness and balance can help reduce the number of traumatic brain injuries due to falls, thereby in turn reducing the risk of acute subdural hematoma.
Other measures that can reduce head injuries
wearing seat belts while riding in motor vehicles
following sports safety guidelines for children, adolescents, and adults
- exercising control in high-speed sports, such as skiing
How is the injury recognized?
Diagnosis of acute subdural hematoma begins with a history and physical exam. The healthcare professional may order additional tests, such as:
- cerebral angiogram
- cranial CT scan
- cranial MRI
What are the treatments for the injury?
A craniotomy, or brain surgery, may be indicated as the treatment for acute subdural hematoma. The skull is opened, and the hematoma is removed. Often where there is swelling of the brain, the piece of bone is left out. It may be replaced later if the individual recovers sufficiently. This practice can relieve the increased pressure inside the skull that frequently occurs.
Breathing is often controlled with a ventilator (an artificial breathing machine). Fluids and medicines are used to control blood flow in the brain. Anticonvulsant medicines are often used to prevent seizures.
Those who recover from surgery may be mildly or severely neurologically impaired. If so, long-term rehabilitation may be necessary. Some survivors are so neurologically impaired that long-term nursing care in a skilled nursing facility may be necessary.
What are the side effects of the treatments?
After surgery, many individuals have neurological impairments. They may have changes in consciousness level, motor skills, and activities of daily living. Seizure disorders are common, requiring medicines for control.
What happens after treatment for the injury?
After treatment, many individuals may be at risk for future injuries either because they are physically impaired or because they have problems with memory, judgment, and attention span.
Some of these changes may be permanent. Psychological counseling may be helpful for both the individual and the family. Any new or worsening symptoms should be reported to the healthcare professional.