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Interventional Pain Management Treatments -
Lumbar Sympathetic Blocks

Lumbar Sympathetic Blocks

Sympathetic nerves, located in spine, control many basic functions. When these nerves are irritated, pain can be complex, and is usually located in the extremities with symptoms including swelling, color, and temperature changes. Lumbar sympathetic block is an injection containing a local anesthetic and steroid, which is injected into or around the sympathetic nerves to block the transmission of pain impulses from the legs or lower back, thereby relieving these symptoms.

Are Sympathetic Blocks Suitable For My Condition?
The lumbar sympathetic block is usually indicated as a treatment for conditions such as complex regional pain syndrome (CRPS), Herpes zoster infection, vascular insufficiency (impaired blood flow) and peripheral neuropathy (nerve damage). You are contraindicated for this procedure if you are allergic to the medications being injected, are taking blood thinning medications, have an active infection, or you have diabetes or heart disorders.

The lumbar sympathetic block is performed under local anesthesia and sedation, in an outpatient setting. You will lie flat on your stomach. Your doctor will numb the area of your lower back to be treated. With the help of live X-rays, your doctor will insert a needle into your back. A dye is then injected to check the correct path of the medication. When this is confirmed, the steroid medication and anesthetic is injected into the target site. The entire procedure usually takes less than 30 minutes.

After the procedure you may feel warmth in your lower back and your legs may feel numb or weak. You may have pain relief immediately after the injection, but pain may return after a few hours as the anesthesia wears off. Relief from the medication is observed in 2 to 3 day, as the steroid begins to work. Most often you will need 2 to 10 injections at regular intervals to get continued pain relief.

Side Effects
As with most therapeutic procedures, lumbar sympathetic block may be associated with certain side effects such as temporary pain or soreness at the site of injection, bleeding and infection. This procedure is usually safe and the risks are rare.

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