A 5-minute ultrasound scan can detect people at risk for dementia before symptoms appear.
It is the conclusion of a study that analyzed blood vessels of more than 3,000 necks and monitored over the next 15 years.
They found that people who had the most severe pulse at the beginning of the study had the greatest cognitive decline in the next decade.
Researchers hope their discovery will lead to a new discovery method. Cognitive deterioration leading to dementia.
The study was conducted by a team of international experts University of London (UCL)Measured the pulse wave of blood vessels that delivered blood to the brain.
When a heartbeat causes a wave, it creates a physical "pulse" that passes through the body.
Blood vessels near the heart, when they are Resilient and healthy, Often to reduce the energy of this pulse to avoid reaching the most delicate blood vessels of the body.
However, factors such as aging and hypertension can strengthen these cases and reduce these protective effects.
As a result, progressively stronger pulses can move into fragile blood vessels supplying the brain.
And over time Structural change of the brain It can contribute to the onset of dementia.
The researchers measured the pulse wave of blood vessels that delivered blood to the brain. 3,191 2002.
Over the next 15 years, researchers have performed memory tests and the ability to solve participants' problems.
Scientists found that people who showed the strongest pulse (25% of participants) at the beginning of the study 50% more opportunities Compared to other participants, it shows that the perceived deterioration during the next decade has accelerated.
According to the researchers, this is equivalent to a further deterioration of almost a year or a year and a half.
Cognitive disorders are often present. One of the first signs of dementia, Although not everyone who experiences it develops the disease.
Treatment and Intervention
Researchers argue that this test can provide a new way to identify people at risk for dementia, Early treatment And lifestyle mediation.
There is evidence that controlling blood pressure and cholesterol, maintaining a healthy diet, exercising regularly and quitting smoking can help prevent dementia.
Scott Chiesa, a researcher at UCL, says, "Dementia Decades of damage resultsSo when a person is suffering from dementia, it is too late to do something. "
"What we are trying to say is that you have to intervene as soon as possible and find out how you can make progress towards the possibility of presenting dementia and how to focus on it."
The study, funded by the British Heart Foundation, does not include data on how many people suffered from dementia.
But researchers are now using the scanner. Magnetic resonance imaging (MRI) was used to determine whether participants showed structural and functional changes in the brain that could explain cognitive decline.
We also want to test if the scanner improves the risk prediction score of existing dementia.
Dr. Carol Routledge, director of research at Alzheimer 's Research UK, If ultrasound can improve the diagnosis of dementia.
"What we know is that the blood supply to the brain is very important, and maintaining a healthy heart and blood pressure is a low risk of developing dementia," he said.
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