Cognitive impairment before and after intracerebral haemorrhage: a systematic review

Claire Donnellan1, David Werring2

  • 1School of Nursing and Midwifery, Faculty of Health Sciences, University of Dublin Trinity College, 2 Clare Street, Dublin 2, Ireland. cdonnel@tcd.ie.

Insights

Cognitive impairment is common before and after intracerebral hemorrhage (ICH), affecting nearly one-third of patients. Factors like prior stroke and hemorrhage volume predict cognitive decline post-ICH.

Area of Science:

  • Neurology
  • Neuroscience
  • Cognitive Science

Background:

  • Intracerebral hemorrhage (ICH) is increasingly linked to cognitive dysfunction, with dementia prevalence ranging from 5-44%.
  • Existing research on cerebrovascular disease and cognition has predominantly focused on ischemic stroke.
  • This review addresses the gap by focusing on cognitive dysfunction specifically related to ICH.

Purpose of the Study:

  • To systematically identify and quantify studies examining cognitive function before and after intracerebral hemorrhage.
  • To synthesize findings on the prevalence and predictors of cognitive impairment in ICH patients.
  • To identify commonly affected cognitive domains and assessment tools in ICH.

Main Methods:

  • A systematic literature search was conducted across PubMed, Science Direct, Scopus, and PsycINFO.
  • Studies were included if they assessed global cognition or used a neuropsychological battery.
  • Nineteen studies were included: 8 focusing on pre-ICH cognition and 11 on post-ICH cognition.

Main Results:

  • Cognitive impairment prevalence ranged from 9-29% pre-ICH and 14-88% post-ICH.
  • Predictive factors included prior stroke, ICH volume/location, and cerebral amyloid angiopathy markers.
  • Commonly affected domains post-ICH were processing speed, executive function, memory, language, and visuospatial abilities.

Conclusions:

  • Cognitive impairment and dementia affect approximately one-third of patients following intracerebral hemorrhage.
  • Early identification and management of cognitive dysfunction are crucial in ICH care.
  • Further research is needed to fully elucidate the long-term cognitive sequelae of ICH.
Abstract

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