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Cerebral Microbleeds Are Associated With Mild Cognitive Impairment in Patients With Hypertension

Jinbiao Zhang1, Lifeng Liu2, Hairong Sun1

  • 1Department of Neurology, Weihai Municipal Hospital, The Affiliated Hospital of Binzhou Medical University, Weihai, China.

Journal of the American Heart Association
|June 3, 2018
PubMed
Abstract

Insights

Cerebral microbleeds (CMBs) are linked to mild cognitive impairment (MCI) in hypertensive patients. More CMBs and specific locations correlate with cognitive decline, highlighting their role in hypertension-related brain damage.

Area of Science:

  • Neurology
  • Vascular Neurology
  • Cognitive Neurology

Background:

  • Cerebral microbleeds (CMBs) are indicators of brain damage from vascular and amyloid pathologies.
  • Essential hypertension is a key risk factor for cerebrovascular diseases.
  • The relationship between CMBs and mild cognitive impairment (MCI) in hypertensive patients requires further investigation.

Purpose of the Study:

  • To investigate the association between the count and location of CMBs and the risk of MCI.
  • To explore the correlation between CMBs and specific cognitive domains in patients with essential hypertension.

Main Methods:

  • Cross-sectional study of 50+ year old outpatients with essential hypertension from 3 centers in northern China.
  • Generalized linear Poisson and linear mixed models used to analyze CMBs and cognitive function.
  • Adjusted for various demographic, cardiovascular, and neuroimaging factors.

Main Results:

  • Patients with hypertension and MCI had a higher prevalence, number, and specific distribution of CMBs (P<0.001).
  • Presence of any CMBs, lobar CMBs, and deep/infratentorial CMBs were independently associated with MCI.
  • Multiple CMBs (≥5) correlated with lower overall cognitive scores and poorer performance in processing speed and motor speed.

Conclusions:

  • Cerebral microbleeds (CMBs) are independently associated with mild cognitive impairment (MCI) in hypertensive individuals.
  • CMB count and location are significant predictors of cognitive status in this population.
  • Findings underscore the importance of CMBs in understanding hypertension-related cognitive decline.
Keywords:
cerebral microbleedcerebral small vessel diseasehypertensionmild cognitive impairmentrisk factor

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