Epidural Injections (Cervical, Thoracic, or Lumbar)
What is the epidural space?
The
membrane that covers the spinal cord and nerve roots in the spine is called the
dura membrane. The space surrounding the dura is the epidural space. Nerves travel
through the epidural space to the back and into the legs. Inflammation of these
nerve roots may cause pain in these regions due to irritation from a damaged disc
or from contact with the bony structure of the spine.
What
is an epidural injection and why is it helpful?
An epidural
injection places anti-inflammatory medicine into the epidural space to decrease
inflammation of the nerve roots, hopefully reducing the pain in the back or legs.
The epidural injection may help the injury to heal by reducing inflammation. It
may provide permanent relief or a period of relief for several months while the
injury/cause of pain is healing.
What happens
during the procedure?
The patient is placed lying on their abdomen
on the x-ray table and positioned in such a way that the physician can best visualize
the low back using x-ray guidance. The skin on the back is cleansed using a sterile
solution called Betadine. Next, the physician injects a small area of skin with
numbing medicine. This medicine stings for several seconds. After the numbing
medicine has been given time to be effective, the physician directs a small needle,
using x-ray guidance into the epidural space. A small amount of contrast (dye) is
injected to insure proper needle position in the epidural space. A mixture of
numbing medicine (anesthetic) and anti-inflammatory (cortisone/steroid) is injected.
What happens after the procedure?
Patients
are then moved to the recovery area where they are monitored for 30 minutes. Patients
are then asked to report the relief they experience by calling the clinic within
2 weeks of having the procedure. At that time an appointment for a repeat block
may be made if indicated. The neck, arms, back or legs may feel weak or numb for
a few hours. This is not unusual, but does not always happen. In the first few
days after the procedure pain may increase or even change location. It will take
usually 3-7 days for the anti-inflammatory effect of the cortisone to be maximal.
General
Pre/Post Instructions
Patients may eat a light meal before
the procedure. If patient is an insulin-dependent diabetic, they should take their
insulin and eat prior to the procedure. Patients may take their routine medications.
(e.g. high blood pressure and oral diabetic medications). If you are on Coumadin,
Lovenox, or Plavix (blood thinners) you must notify the office so that special
instructions may be given. If you are allergic to iodine, contrast, or medical
dye, please inform the office. Patients can expect to be at that facility approximately
1½ hours. A driver must accompany the patient and be responsible for getting
them home. It is best if no driving is done the day of the procedure and after
the injection. Patients may return to their normal activities the day after the
procedure, including returning to work unless otherwise instructed by the physician.
