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TN Treatment Options (From a talk by Vancouver neurosurgeon Dr.
Don’t come to the neurosurgeon first
. TN should be managed by your
family physician and neurologist with medication. You don’t need to see a
The meds don’t work, or; You can control the pain with medication, but the side effects are so
The two most successful meds are Carbamazepine (Tegretol) and Gabapentin
(Neurontin), both are anti-seizure meds.
Tegretol is best taken with food.
Neurontin is better tolerated than Tegretol at higher doses and family
doctors don’t always prescribe a high enough dose. Some patients take
up to 1200 mg of Neurontin three times a day
. Side effects include
sleepiness and poor memory. Neurontin is OK for long-term use.
The trigeminal nerve is like a wire wrapped in insulation. Hundreds of these
nerves are bundled together in a cable known as the trigeminal nerve. If the insulation around part of this nerve is lost (either worn away by a blood vessel or
attacked by the immune system in MS), the nerve can short-circuit and cause pain. Meds suppress the information being carried in this nerve and reduce the
pain. Unfortunately, meds travel throughout the brain suppressing all sorts of
brain functions if the dosage is high. This means that “walking, talking and memory” can be suppressed resulting in people feeling sleepy and wobbly and
no longer their former selves. The light’s gone out. Surgery
The choice is between a Rhizotomy, which injures the nerve to block the pain by
creating numbness, and a Microvascular Decompression (MVD) which is brain surgery to separate the nerve from the blood vessel that is compressing it.
There are many kinds of rhizotomy. Vancouver neurosurgeon Dr.
Honey prefers the Radiofrequency Rhizotomy because it can best control the
The nerve is burned with a heated needle.
The challenge for the surgeon is the balance between burning the nerve too much and creating unpleasant numbness, or not burning it enough so
that there is less numbness but the nerve recovers and the pain can return, necessitating a repeat surgery.
are that the injury can be directed to a specific place on the
nerve creating numbness where the nerve needs it; it is 90 per cent effective; it’s an outpatient procedure taking one hour and doesn’t require
People who have TN because they have MS are restricted to a
The nerve sheath is being damaged by their own bodies
and the MVD brain surgery option will not work for them.
one per cent can get anesthesia dolorosa (painful
numbness); preferable not to do it for TN in the eye as numbness in the eye can lead to eye injuries because people can’t feel if they’ve got
anything in their eye; it can create weakness in the jaw; the nerve can
heal itself and the procedure will need to be repeated.
Other Types of Rhizotomy
injures the nerve chemically; can be too mild.
fires radiation at the nerve. Benefits are that it’s easy to
adjust the dose and do minimal damage to the nerve, but there can be
recurrence necessitating repeat surgeries.
can cause severe damage to the nerve.
dangerous procedure where nerve is cut
directly. High risk of uncomfortable numbness.
Microvascular Decompression: MVD is Brain Surgery
Removes the “pinch” on the nerve.
There is usually a blood vessel
beating on the nerve and over the years, the insulation has worn off. An
MVD separates the two by inserting a piece of Teflon between them.
MVD is major surgery
and not always recommended for those who are
older or who have other health problems; it does not work for MS patients (TN can be the first symptom of MS)
It is recommended for people who are young
and healthy who have
a “pinched” nerve. Benefits are that it fixes the cause of the problem, there is no numbness and it’s 90 per cent effective. As the surgery is on
the outside of the brain, it won’t affect “who you are.”
three hours of brain surgery requiring a general
anesthetic which means a one per cent risk of death or stroke; two days
in hospital and a six week recovery period; 20 per cent have an allergic reaction to the Teflon padding and need to be treated with steroids until
the inflammation settles down; there is a two per cent risk that the smile nerve and the hearing nerve can be damaged.
patients usually stay on their meds for a month; MVD can
cause temporary nausea as surgery takes place close to the brain’s
nausea centre; there can be some soreness in the neck depending on
whether or not you’ve got a muscular neck so this tends to affect men more than women; no driving until you can check your “blind spot”
comfortably; the ear may be plugged with water and it takes about a month for the fluid to drain away; and the head is wrapped in bandages
for two weeks to make sure no fluid collects around the location of the
W estchester R egional E mergency M edical A dvisory C ommittee BLS Nebulized Albuterol Collaborative Agreement Between an Emergency Medical Service (EMS) agency and a Physician Medical Director for the Provision of Nebulized Albuterol Administration in New York State, in the Westchester EMS Region The following agreement stands between the ____________________________________
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