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Related Experiment Videos

Recovery of cognitive function after stroke

D W Desmond1, J T Moroney, M Sano

  • 1Department of Neurology, Columbia University, College of Physicians and Surgeons, New York, NY, USA.

Stroke
|October 1, 1996
PubMed
Summary
This summary is machine-generated.

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Cognitive function may improve long-term after stroke, particularly with left hemisphere damage. Diabetes significantly hinders this recovery, suggesting a need for targeted interventions in stroke patients.

Area of Science:

  • Neurology
  • Neuropsychology
  • Gerontology

Background:

  • Stroke recovery of cognitive function is often considered maximal within 3 months.
  • The long-term trajectory and predictors of cognitive improvement post-stroke require further investigation.

Purpose of the Study:

  • To investigate the long-term course of generalized cognitive function after ischemic stroke.
  • To identify clinical correlates associated with cognitive improvement in stroke survivors.

Main Methods:

  • 151 ischemic stroke patients underwent annual neuropsychological testing for cognitive function assessment.
  • Cognitive performance was standardized using z scores against a stroke-free normative group.
  • Logistic regression analyzed associations between stroke characteristics, vascular risk factors, and cognitive improvement.

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Main Results:

  • Nineteen patients showed significant cognitive improvement, primarily within the first year post-stroke.
  • Left hemisphere infarction (OR, 5.57) and major hemispheral stroke syndromes (OR, 3.32) were associated with improvement.
  • Diabetes mellitus was linked to a failure to improve (OR, 0.12).

Conclusions:

  • Long-term cognitive improvement after stroke is possible, especially with left hemisphere lesions and severe syndromes.
  • Diabetes mellitus may impede cognitive recovery due to increased cerebrovascular disease burden.
  • Identifying predictors like stroke location and comorbidities can guide personalized stroke rehabilitation strategies.