Tuesday, April 23, 2019
Home Health They relate low blood pressure to dementia

They relate low blood pressure to dementia

It is very common that, after sitting for a while and get up quickly, we suffer from slight dizziness and that feeling of numbness and heaviness in the head that is so annoying.
That sensation is caused by a sudden drop in blood pressure called orthostatic hypotension, which could lead to an increased risk of dementia or stroke in middle-aged people, according to a new study published by the American Academy of Neurology and retaken by the site. " Very interesting".
Orthostatic hypotension had already been related to heart problems, fainting and falls but the new research, led by Dr. Andreea Rawlings of the Johns Hopkins Bloomberg School of Public Health, seeks to determine if this form of low blood pressure is related to brain problems, specifically dementia. For the study, it was established that low blood pressure would be considered when there was a minimum decrease of 20 millimeters of mercury (mmHg) in systolic blood pressure, when the heart contracts to produce a heartbeat; or 10 mmHg in diastolic blood pressure, when the heart is at rest.
The study was conducted with 11,709 people with an average age of 54 years followed by a group with an average age of 25 years. During the initial examination, participants were evaluated for orthostatic hypotension. They were instructed to lie down for 20 minutes and then rise with a fluid and rapid movement. Blood pressure was measured five times when standing up. The researchers determined the average of the readings and calculated the difference with respect to the average blood pressure of the participants at rest. It was determined that 522 participants, 4.7%, had orthostatic hypotension at the beginning of the study.
Researchers monitored participants for signs of dementia or stroke with visits and reviewing medical records. During the study, 1068 people developed dementia and 842 people suffered an isthmic stroke, which happens when blood flow is blocked in part of the brain. It was observed that those participants who had orthostatic hypotension at the beginning had a 54% higher risk of developing dementia than the others.
"Measuring orthostatic hypotension in middle-aged people can be a way to identify people who need careful control of dementia or stroke," says Andreea Rawlings.


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