Quality of Life, Daily Living Did Not Improve in Study

By Denise Mann WebMD Health News

Reviewed by Laura J. Martin, MD

June 20, 2012 — For some people with Parkinson’s disease, deep brain stimulation can have immediate and dramatic effects on tremors, rigidity, balance, and other motor symptoms.

Now new research shows that these benefits may last at least three years. The findings appear online in Neurology.

Deep brain stimulation uses a battery-operated device to deliver electrical impulses — similar to a pacemaker for the heart — to areas of the brain that control movement. The impulses are thought to block abnormal signals that cause many of the movement problems (motor symptoms) of Parkinson’s. This procedure is typically reserved for individuals who no longer respond to their Parkinson’s medications or who experience unacceptable side effects from them.

According to the new findings, this treatment helped with motor symptoms such as tremor, but individuals did show gradual declines over time in their quality of life, ability to perform tasks of daily living, and thinking skills.

“This study looked past the immediate ‘wow effect,’” says Michele Tagliati, MD. He wrote an editorial accompanying the new study.

“Now we want to know what we can expect over the next 10 years, and this starts to make it clearer,” says Tagliati, the director of the Movement Disorders Program at Cedars-Sinai Medical Center in Los Angeles.

“The effect on motor function is sustained,” says researcher Frances M. Weaver, PhD. She is the director of the Center for Management of Complex Chronic Care at Edward Hines Jr. VA Hospital in Hines, Ill. But “deep brain stimulation does not have an impact on the other symptoms of the disease, so there will be progression.”

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Device Calms Parkinson's Tremor for 3+ Years

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