Researchers have identified nine cases of people who lost their ability to swim after having a rooted brain stimulation device implanted to control symptoms of Parkinson's disease.
Researchers have identified nine cases of people who lost their ability to swim after having a rooted brain stimulation device implanted to control symptoms of Parkinson's disease.// Online issue of Neurology®, the medical journal of the American Academy of Neurology. All nine people had been good swimmers even after their Parkinson's disease diagnosis. But once they had deep brain stimulation surgery, researchers found while other movement symptoms improved, their swimming skills deteriorated.
‘Swimming is a highly coordinated movement that requires a complicated arm and leg coordination.’
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"Until more research is done to determine why some people with deep brain stimulation can no longer swim, it is crucial that people be told now of the potential risk of drowning and the need for a carefully supervised assessment of their swimming skills before going into deep water," said author Daniel Waldvogel, MD, of the University of Zurich in Switzerland.Read More..
For deep brain stimulation, electrodes are placed in certain areas of the brain to control abnormal movements. The electrodes are connected to a device placed under the skin in the upper chest. The device controls the electrical impulses.
Of the nine documented cases, three are highlighted in the research paper. Each person's movement symptoms improved after deep brain stimulation.
A 69-year-old man who was a good swimmer and lived on a lake jumped into the water after deep brain stimulation. Since his movement symptoms had improved, he thought would be able to swim. But he could not. He told researchers he would have drowned if he hadn't been rescued by a family member.
A 59-year-old woman who was a competitive swimmer and continued to swim after being diagnosed with Parkinson's disease was no longer able to swim after deep brain stimulation. Even after practice, she never regained her former ability level. A 61-year-old woman who swam in competitions crossing Lake Zurich, which is two miles wide, could barely swim two-tenths of a mile after deep brain stimulation. She complained of awkward posture when trying to swim.
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"Swimming is a highly coordinated movement that requires complicated arm and leg coordination," said Waldvogel. "Exactly how deep brain stimulation is interfering with this ability needs to be determined."
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"Even though these reports affected only a few people, we felt this potential risk was serious enough to alert others with Parkinson's disease, as well as their families and doctors," he said
Source-Eurekalert