New Treatment for Traumatic Brain Injury

 Currently there are no drugs with which to treat and cure brain injury. Standard treatment is supportive: stabilizing the patient, maintaining other vital functions such as blood pressure and breathing, treating other injuries, minimizing infections, and monitoring swelling.

Blogger David S. Casey writes about a new study.  

A promising new treatment for traumatic brain injury, the first significant advance in 30 years, is now being tested in a large scale, multi-center clinical trial. Over the next three to four years, 17 participating trauma centers in 15 states will enroll more than 1100 patients with severe TBI. Half of the patients with severe head injuries will be given an infusion of the hormone progesterone as well as all standard treatment for TBI; the other patients will be given a placebo infusion, which contains no active agents, and as well as all standard treatment. The study will evaluate the protective effect of the hormone progesterone when it is administered within four hours of the injury. The study is double-blinded, meaning neither patients nor treatment staff will know which infusion the patient receives.

Read more from David S. Casey here.

TBI - Traumatic Brain Injury Treatment

Medical care usually begins when paramedics or emergency medical technicians arrive on the scene of an accident or when a TBI - Traumatic Brain Injury patient arrives at the emergency department of a hospital. Because little can be done to reverse the initial brain damage caused by trauma, medical personnel try to stabilize the patient and focus on preventing further injury. Primary concerns include insuring proper oxygen supply, maintaining adequate blood flow, and controlling blood pressure. Since many head-injured patients may also have spinal cord injuries, the patient is placed on a back-board and in a neck restraint to prevent further injury to the head and spinal cord.

Medical personnel assess the patient's condition by measuring vital signs and reflexes and by performing a neurological examination. They check the patient's temperature, blood pressure, pulse, breathing rate, and pupil size and response to light. They assess the patient's level of consciousness and neurological functioning using the Glasgow Coma Scale.

Imaging tests help in determining the diagnosis and prognosis of a TBI -  Traumatic Brain Injury patient. Patients with mild to moderate injuries may receive skull and neck X-rays to check for bone fractures. For moderate to severe cases, the gold standard imaging test is a computed tomography (CT) scan, which creates a series of cross-sectional X-ray images of the head and brain and can show bone fractures as well as the presence of hemorrhage, hematomas, contusions, brain tissue swelling, and tumors. Magnetic resonance imaging (MRI) may be used after the initial assessment and treatment of the TBI - Traumatic Brain Injury patient. MRI uses magnetic fields to detect subtle changes in brain tissue content and can show more detail than X-rays or CT. The use of CT and MRI is standard in TBI - Traumatic Brain Injury treatment, but other imaging and diagnostic techniques that may be used to confirm a particular diagnosis include cerebral angiography, electroencephalography (EEG), transcranial Doppler ultrasound, and single photon emission computed tomography (SPECT).

Approximately half of severely head-injured patients will need surgery to remove or repair hematomas or contusions. Patients may also need surgery to treat injuries in other parts of the body. These patients usually go to the intensive care unit after surgery.

Sometimes when the brain is injured swelling occurs and fluids accumulate within the brain space. It is normal for bodily injuries to cause swelling and disruptions in fluid balance. But when an injury occurs inside the skull-encased brain, there is no place for swollen tissues to expand and no adjoining tissues to absorb excess fluid. This leads to increased pressure is called intracranial pressure (ICP). High ICP can cause delicate brain tissue to be crushed, or parts of the brain to herniate across structures within the skull, causing severe damage.

Medical personnel measure a patient's ICP using a probe or catheter. The instrument is inserted through the skull to the subarachnoid level and is connected to a monitor that registers the patient's ICP. If a patient has high ICP, he or she may undergo a ventriculostomy, a procedure that drains cerebrospinal fluid (CSF) from the ventricles to bring the pressure down by way of an external ventricular drain (EVD).

Barbiturates can be used to decrease ICP; mannitol was thought to be useful, but it appears likely that the studies suggesting that it was of use may have been falsified

Decompressive craniectomy is a last-resort surgical procedure in which part of the skull is removed in an attempt to reduce severely high ICP.