Related Experiment Video
Updated: Jan 22, 2026
07:30
Evaluation of the Cognitive Performance of Hypertensive Patients with Silent Cerebrovascular Lesions
Published on: April 23, 2021
3.4K
Association Between Silent Brain Infarcts and Cognitive Function: A Systematic Review and Meta-Analysis
Chunyan Lei1, Qionghua Deng1, Haijiang Li1
1Department of Neurology, First Affiliated Hospital of Kunming Medical University, Kunming, Yunnan Province, PR China.
Summary
Silent brain infarct (SBI) is not clinically silent and significantly contributes to cognitive decline. This systematic review highlights SBI as a key factor impacting cognitive function, underscoring its clinical relevance.
Area of Science:
- Neurology
- Neuroscience
- Public Health
Background:
- Silent brain infarct (SBI) has been traditionally viewed as clinically insignificant.
- Emerging evidence suggests SBI may serve as a subclinical marker for future cognitive decline.
Purpose of the Study:
- To systematically review and meta-analyze the association between silent brain infarcts and cognitive function decline.
- To determine if SBI is a risk factor for cognitive impairment.
Main Methods:
- Systematic literature review across multiple databases (Cochrane Library, MEDLINE, EMBASE, CNKI).
- Inclusion of 19 case-control studies (6712 participants) and 3 prospective cohort studies (4433 participants).
- Meta-analysis of cognitive function scores (MMSE, MoCA) in relation to SBI presence.
Main Results:
- Meta-analysis of 9 studies indicated SBI is a significant factor in cognitive decline (MMSE: SMD -.47).
- Meta-analysis of 4 studies showed SBI as an independent factor in cognitive dysfunction (MoCA: SMD -3.36).
- Ten studies confirmed SBI's association with declines in specific cognitive domains.
Conclusions:
- Silent brain infarcts are not clinically silent and actively contribute to cognitive dysfunction.
- SBI should be recognized as a significant factor inducing cognitive impairment, necessitating further clinical attention.
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