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miércoles, 19 de enero de 2011

SINDROME DE GUILLAIN BARRE



JAMA Patient Page
JAMA. 2011;305(3):319. doi: 10.1001/jama.305.3.319
Guillain-Barré Syndrome


Ryszard M. Pluta, MD, PhD, Writer; Cassio Lynm, MA, Illustrator; Robert M. Golub, MD, Editor
KEYWORDS: AUTOIMMUNE DISEASES OF THE NERVOUS SYSTEM, GUILLAIN-BARRE SYNDROME.
Guillain-Barré syndrome (GBS) is a rare autoimmune neurological disease in which the body' immune system produces antibodies against its own nerves, resulting in damage to them. It is named after 2 French doctors who described this syndrome for the first time in 2 soldiers during World War I. Cases of GBS may develop after an infection (for example, an upper respiratory or gastrointestinal illness). It is thought that the body makes antibodies to protect itself against an invading bacterium or virus. However, certain bacteria and viruses have protein coverings that resemble some normal proteins on the sheath that wraps around nerves (myelin sheath). This can lead to the bodys immune system attacking ones own nerves. The swine flu vaccine used in 1976 was associated with several cases of Guillain-Barré syndrome. The new types of flu vaccines have not had such an effect.
SYMPTOMS

Guillain-Barré syndrome symptoms include weakness, numbness, and tingling sensations in the legs and arms that can lead to paralysis. It sometimes affects breathing muscles such that patients need to be put on a ventilator. All these sensory and muscle symptoms can develop and progress either very quickly (within hours) or much more slowly (within 3-4 weeks).

RISK FACTORS FOR GUILLAIN-BARRÉ SYNDROME


•Viral infections, such as HIV/AIDS, herpes, respiratory infections, and mononucleosis

•Bacterial infections

•Hodgkin disease, a malignant disease of the lymphatic system

•Systemic lupus erythromatosus, an autoimmune disease of the skin and other organs

•Recent surgery

DIAGNOSIS AND TREATMENT

Symptoms of Guillain-Barré syndrome sometimes require emergency treatment, especially when breathing muscles are affected. If you notice numbness, tingling, and muscle weakness in your legs you should contact a physician for an evaluation to determine the cause. Your physician will perform a physical examination, obtain laboratory tests, and possibly perform a lumbar puncture (spinal tap) to collect spinal fluid, which can help diagnose the problem. Treatment of Guillain-Barré syndrome consists of support and monitoring body functions to facilitate recovery of the nerves.
PROGNOSIS

There is no cure for Guillain-Barré syndrome but several treatments can alleviate the symptoms and accelerate recovery of the affected nerves. In the majority of cases, the symptoms resolve completely or almost completely within weeks.
FOR MORE INFORMATION•National Institute of Neurological Disorders and Stroke
http://www.ninds.nih.gov/disorders/gbs.htm
•GBS/CIDP Foundation International
http://www.gbs-cidp.org

INFORM YOURSELF

To find this and previous JAMA Patient Pages, go to the Patient Page link on JAMAs Web site at http://www.jama.com. Many are available in English and Spanish. A Patient Page on systemic lupus erythromatosus was published in the June 22/29, 2005, issue of JAMA.
Sources: National Institute of Neurological Disorders and Stroke, GBS/CIDP Foundation International