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Updated: Aug 2, 2025

Evaluation of the Cognitive Performance of Hypertensive Patients with Silent Cerebrovascular Lesions
Published on: April 23, 2021
Insights
Hypertension damages the brain, increasing dementia risk. Controlling blood pressure, especially with RAAS inhibitors, significantly reduces this risk, even in younger individuals.
Area of Science:
- Neurology
- Cardiovascular Medicine
- Gerontology
Background:
- Hypertension is a significant risk factor for acute and chronic brain damage.
- Chronic hypertension leads to cognitive deficits and increases the risk of dementia.
- Early onset of hypertension exacerbates the risk of age-related cognitive decline and dementia.
Purpose of the Study:
- To review the impact of hypertension on brain health.
- To explore the pathophysiological mechanisms linking hypertension to cognitive impairment and dementia.
- To evaluate the efficacy of antihypertensive treatments in preventing dementia.
Main Methods:
- Review of existing literature on hypertension and brain damage.
- Analysis of pathophysiological mechanisms including microvascular damage and brain atrophy.
- Evaluation of clinical evidence for antihypertensive drug efficacy in dementia prevention.
Main Results:
- Hypertension causes both acute brain injury and chronic neurodegenerative changes.
- Microvascular damage and brain atrophy are key mechanisms linking hypertension to cognitive decline.
- Antihypertensive drug treatment, particularly intensive control and RAAS inhibitors, reduces dementia risk.
Conclusions:
- Controlling hypertension from its earliest onset is crucial for preserving brain health.
- Effective blood pressure management is a key strategy for dementia prevention.
- Targeted therapies like RAAS inhibitors offer enhanced neuroprotective benefits.
Abstract:
The brain is a target of organ damage due to hypertension. In addition to acute damage in the form of hypertensive encephalopathy, ischaemic stroke, and intracerebral haemorrhage, hypertension causes chronic changes in the brain tissue that, over the course of years, will be manifested by impaired brain functions including cognitive deficit. Hypertension is also a risk factor for progression of cognitive disorder to overt dementia. It is commonly accepted that the earlier in life hypertension occurs, the greater the risk of developing dementia in old age. The pathophysiological mechanism underlying this effect of hypertension is microvascular damage which causes changes in the brain tissue and brain atrophy. A favourable fact is that the treatment with antihypertensive drugs demonstrably reduces the risk of developing dementia in individuals with hypertension. A more profound preventive effect was found in intensive blood pressure control and in RAAS system inhibitors. Therefore, hypertension has to be controlled since its onset, even in younger patients.
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