Acute spinal
cord injury refers to hours or days after spinal cord injury during
which continued deterioration or tissue damage may occur. Shortly after
an injury, the spinal cord often does not appear to be severely damaged
even though there may be immediate functional loss. The injury
initiates a cascade of chemical and cellular responses that contribute
to further tissue damage, including inflammation, free radicals, and
swelling (edema). The spinal cord may be compressed during this period.
Compression or decreased perfusion (blood flow) of the spinal cord
aggravate the injury. These causes of progressive tissue damage can and
should be relieved as rapidly as possible. The goal of acute spinal
cord injury care is to stabilize the spinal cord to prevent further
damage, save as much tissue as possible, and prevent complications of
spinal cord injury.
• Emergency management. The first
objective of emergency management of spinal cord injury is to establish
ABC (airway, breathing, and circulation). The spine must be immobilized
to prevent further injury. The patient must be transported rapidly to
the nearest medical center, preferably a Level 1 Trauma Center. If
blood pressure is low, fluid and drug therapies must be given to
maintain blood flow in the spinal cord. In cervical spinal cord
injuries that affect breathing, ventilatory support may be necessary. A
foley catheter is usually placed in the bladder to drain urine.
•
Methylprednisolone therapy. The patient should receive intravenous
high-dose steroid methylprednisolone (30 mg/kg bolus followed by 5.4
mg/kg/hour for 23 hours) as soon as possible. This therapy improves
neurological recovery by about 20%. If the methylprednisolone is
started between 3-8 hours after injury, the infusion should be extended
to 48 hours. If the methylprednisolone cannot be started within 8
hours, it should not be given. Therapy beyond 8 hours does not improve
functional recovery.
• Decompression of the spinal cord. If
the spinal cord is compressed by bone or disc, every effort must be
made to decompress the cord as soon as possible. Cervical spinal
injuries can often be decompressed by traction of the spinal column to
realign the vertebral bodies. However, thoracic and lumbosacral spinal
fractures usually cannot be decompressed by traction alone. Surgery may
be necessary to decompress the cord or spinal roots. Thoracic or
lumbosacral spinal cord decompression may require opening the chest
cavity or retroperitoneal space, requiring a team of surgeons. Some
surgeons delay surgery for this reason, particularly patients that have
so-called “complete” spinal cord injury. I believe that
“complete” injuries should be treated as aggressively as
incomplete spinal cord injuries.
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