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People who feel weak, dizzy or dizzy when they get up, caused by a sudden drop in blood pressure may be at higher risk of developing dementia or stroke decades later, according to a study by Johns Hopkins Bloomberg School of Public Health in the United States
The study, published in the journal of the American Academy of Neurology, involved 11,709 people with an average age of 54 years , who were followed for 25 years. None of them had a history of heart disease or stroke at the beginning of the study.
"Orthostatic hypotension has been badociated with heart disease, fainting and falls. So we wanted to conduct a large study to determine if this form of low blood pressure has also been linked to problems in the brain, especially dementia, "said Andreea Rawlings, of the Johns School of Public Health Hopkins Bloomberg.
For the study, resting blood pressure was defined as a fall of at least 20 millimeters of mercury (mmHg) in systolic blood pressure, which is the pressure in the blood vessels when the heart beats, or at least 10 mmHg in diastolic blood pressure, the pressure when the heart is at rest.The normal blood pressure is less than 120/80 mmHg.In the course of the initial examination, participants were examined for orthostatic hypotension, asked to lie down for 20 minutes and then to get up with a gentle, quick motion.
The researchers found that people who is suffering Orthostatic hypotension at the start of the study had 54% more risk of developing dementia than those who did not have dystonia. have orthostatic hypotension at the beginning of the study.
"The measurement of orthostatic hypotension in middle-aged people might be a new way to identify people who need to be closely monitored for dementia or stroke. brain, "said Rawlings. "More studies are needed to clarify what may be behind these links, as well as to explore possible prevention strategies," she said.
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