Neurology diagnoses and treats disorders of the nervous system, including the brain, spinal cord, and nerves, as well as thought and memory.
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The primary goal of acute care is neuroprotection: preserving the cells that haven’t died yet. This involves the “Tiered Therapy” protocol for intracranial pressure. Tier 1 involves simple measures: elevating the head of the bed to 30 degrees (to improve venous drainage) and sedation/analgesia to reduce metabolic demand.
Tier 2 involves hyperosmolar therapy. Hypertonic saline (concentrated salt water) or Mannitol is given intravenously. These agents turn the blood into a magnet for water, sucking fluid out of the swollen brain tissue. Tier 3 is for refractory pressure and includes medically induced coma (Barbiturates) or therapeutic hypothermia (cooling the body).
When medical management fails, or if there is a large mass, surgery is indicated. A Decompressive Craniectomy involves removing a large portion of the skull (bone flap) to break the “closed box” dynamic. This allows the swollen brain to herniate outward through the skin rather than crushing the brainstem.
This is a life-saving but morbid procedure. The bone flap is usually stored in a freezer or the patient’s abdomen. Weeks later, once swelling subsides, a Cranioplasty is performed to replace the bone. Complications include “Syndrome of the Trephined,” where atmospheric pressure depresses the brain, causing neurological deficits.
Treating the “storming” phase requires suppressing the autonomic nervous system. Beta-blockers (like Propranolol) are used to slow the heart rate and lower blood pressure. Alpha-agonists (like Clonidine) work centrally to reduce sympathetic outflow.
Opioids and Gabapentin are used to modulate the central processing of sensory input, as even simple touches can trigger a storm. Preventing these surges is critical because they consume massive amounts of oxygen that the healing brain desperately needs.
Post-Traumatic Seizures (PTS) are classified as early (<7 days) or late (>7 days). Prophylactic anticonvulsants, such as Levetiracetam (Keppra) or Phenytoin, are standard of care for the first 7 days to prevent early seizures which can raise ICP. Long-term prophylaxis is generally not recommended unless a late seizure occurs.
If late seizures develop, the diagnosis shifts to Post-Traumatic Epilepsy (PTE). This requires long-term management with antiepileptic drugs. The risk factors for PTE include dural penetration, severe contusion, and intracerebral hemorrhage.
Recovery relies on neuroplasticity—the brain’s ability to rewire around damaged areas. Rehabilitation starts in the ICU. “Early mobilization” programs get patients moving even while on ventilators to stimulate the Reticular Activating System. Amantadine is a key pharmacological agent used to accelerate recovery of consciousness in semi-comatose patients.
Cognitive rehabilitation focuses on executive function and memory. Physical therapy targets gait and balance. Vestibular rehabilitation is essential for post-concussion dizziness. The intensity of therapy correlates directly with functional outcomes.
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It involves using strong anesthetic drugs to completely shut down the brain’s electrical activity, reducing its need for oxygen to the bare minimum to survive severe swelling.
If the brain swells too much, it hits the skull and dies; removing the bone gives the brain room to swell outward safely until it heals.
It is extremely salty water given through an IV that draws excess fluid out of the swollen brain tissue to lower pressure.
A seizure causes the brain cells to fire rapidly, which consumes huge amounts of oxygen and increases pressure, causing further damage to an already injured brain.
Amantadine increases dopamine in the brain and has been proven to help wake up patients who are in a vegetative or minimally conscious state after trauma.
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