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8 November, 2019 00:00 00 AM
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Is head injury causing dementia?

Is head injury 
causing dementia?

When a loved one shows signs of dementia, sometimes a head injury is the cause and MRI scans can help prevent a misdiagnosis of Alzheimer's, researchers report. As many as 21% of older adults with dementia may be misdiagnosed with Alzheimer's disease, a previous study found. Up to 40% of dementias are caused by conditions other than Alzheimer's disease, according to the Alzheimer's Association.

A misdiagnosis can be devastating for patients and their families, and result in patients not receiving appropriate treatment or taking part in clinical trials that could benefit them, according to the authors of this new study.

It included 40 patients, average age 68, who'd suffered a traumatic brain injury (TBI) and later developed memory problems. The patients underwent brain MRI scans, which were analysed with a software programme.

"We already knew that MRIs can reveal subtle abnormalities in patients with neurological disorders, such as Alzheimer's," said study author Dr. Somayeh Meysami, a postdoctoral clinical research fellow in cognitive and behavioural neurology at the University of California, Los Angeles.

"The purpose of our study was to evaluate whether MRI also could reveal distinct abnormalities in traumatic brain injury. And, if we could identify such a pattern, it would lead to improved diagnosis of TBI-related memory loss from other causes of dementia," Meysami explained in a university news release.

The MRI scans revealed that in the TBI patients, most of the brain damage was in a region called the ventral diencephalon, and the least amount of damage was in the hippocampus. The ventral diencephalon is involved in learning and emotions, while the hippocampus is involved in memory and emotions and is the region of the brain most impacted by Alzheimer's disease.

According to study co-author Dr. Cyrus Raji, the method the team used to "measure brain volumes in these individuals is useful because it can be applied on the same type of MRI scans we obtain in the clinic with no special type of imaging required." Raji is an assistant professor of radiology at Washington University in St. Louis. About 2.9 million Americans experienced a TBI in 2014, and the rates are highest among people aged 75 and older, according to the US Centres for Disease Control and Prevention.

When the clocks fall back this Sunday, more than 4 in 10 Americans plan to sleep during that extra hour, a new survey finds.

The American Academy of Sleep Medicine (AASM) asked more than 2,000 adults what they plan to do with the extra hour when daylight saving time ends on Nov. 3. Sleep was the top response (41%), followed by spending the extra hour with friends and family (13%) enjoying a relaxing activity (13%), doing housework and running errands (6%), and catching up on work or studies (5%).

"It's encouraging that people are waking up to the importance of sleep for their health and well-being," AASM president Dr. Kelly Carden said in an academy news release. "The end of daylight saving time is a good reminder that sleep is essential for health, and it is an opportunity to make a commitment to talk to a medical provider about any ongoing sleep problems."

 HealthDay

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Published by the Editor on behalf of Independent Publications Limited at Media Printers, 446/H, Tejgaon I/A, Dhaka-1215.
Editorial, News & Commercial Offices : Beximco Media Complex, 149-150 Tejgaon I/A, Dhaka-1208, Bangladesh. GPO Box No. 934, Dhaka-1000.

Editor : M. Shamsur Rahman
Published by the Editor on behalf of Independent Publications Limited at Media Printers, 446/H, Tejgaon I/A, Dhaka-1215.
Editorial, News & Commercial Offices : Beximco Media Complex, 149-150 Tejgaon I/A, Dhaka-1208, Bangladesh. GPO Box No. 934, Dhaka-1000.

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