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Johns Hopkins researchers identify conditions most likely to kill encephalitis patients
Date:8/20/2013

People with severe encephalitis inflammation of the brain are much more likely to die if they develop severe swelling in the brain, intractable seizures or low blood platelet counts, regardless of the cause of their illness, according to new Johns Hopkins research.

The Johns Hopkins investigators say the findings suggest that if physicians are on the lookout for these potentially reversible conditions and treat them aggressively at the first sign of trouble, patients are more likely to survive.

"The factors most associated with death in these patients are things that we know how to treat," says Arun Venkatesan, M.D., Ph.D., an assistant professor of neurology at the Johns Hopkins University School of Medicine and leader of the study published in the Aug. 27 issue of the journal Neurology.

Experts consider encephalitis something of a mystery, and its origins and progress unpredictable. While encephalitis may be caused by a virus, bacteria or autoimmune disease, a precise cause remains unknown in 50 percent of cases. Symptoms range from fever, headache and confusion in some, to seizures, severe weakness or language disability in others. The most complex cases can land patients in intensive care units, on ventilators, for months. Drugs like the antiviral acyclovir are available for herpes encephalitis, which occurs in up to 15 percent of cases, but for most cases, doctors have only steroids and immunosuppressant drugs, which carry serious side effects.

"Encephalitis is really a syndrome with many potential causes, rather than a single disease, making it difficult to study," says Venkatesan, director of the Johns Hopkins Encephalitis Center.

In an effort to better predict outcomes for his patients, Venkatesan and his colleagues reviewed records of all 487 patients with acute encephalitis admitted to The Johns Hopkins Hospital and Johns Hopkins Bayview Medical Center between January 1997 and July 2011. They f
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Contact: Stephanie Desmon
sdemon1@jhmi.edu
410-955-8665
Johns Hopkins Medicine
Source:Eurekalert

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