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Related Experiment Video

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Modeling Stroke in Mice: Permanent Coagulation of the Distal Middle Cerebral Artery

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Published on: July 31, 2014

Executive function subdomains are associated with post-stroke functional outcome and permanent institutionalization.

H M Laakso^1,2, M Hietanen¹, S Melkas¹

¹Neurology and Neuropsychology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.

European Journal of Neurology

|November 11, 2018

Summary

Executive function deficits after stroke significantly impact daily living. Poor inhibition, a specific executive function, predicts long-term institutionalization, highlighting its prognostic value.

Keywords:

executive functions functional impairment functional outcome institutionalization neuropsychological assessment stroke

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Area of Science:

Neuroscience
Cognitive Psychology
Rehabilitation Medicine

Background:

Executive function (EF) impairment is a common post-stroke cognitive deficit impacting daily independence.
Previous research often used limited cognitive tests, not fully assessing the spectrum of EF subdomains.
Detailed EF assessment is crucial for understanding long-term functional outcomes after stroke.

Purpose of the Study:

To identify which executive function subdomains and specific tests predict long-term functional outcomes post-stroke.
To examine the predictive value of executive functions on institutionalization in stroke survivors.
To establish the prognostic significance of detailed executive function assessment in stroke recovery.

Main Methods:

A cohort of 62 stroke patients underwent a comprehensive battery of seven neuropsychological executive function tests at 3 months post-stroke.
Functional outcomes were assessed using the modified Rankin Scale (mRS) and Instrumental Activities of Daily Living (IADL) scale.
Long-term institutionalization was tracked via national registers over a 21-year follow-up period.

Main Results:

Stroke patients demonstrated poorer performance across multiple executive function tests compared to healthy controls.
Tests assessing inhibition, set shifting, initiation, strategy formation, and processing speed correlated with functional impairment (mRS, IADL).
Executive function subdomains of inhibition, set shifting, and processing speed were significantly associated with functional outcome; inhibition also predicted earlier institutionalization.

Conclusions:

Executive function is strongly linked to functional impairment following a stroke.
Impaired inhibition is a key predictor of earlier permanent institutionalization in stroke survivors.
Specific executive function subdomains possess significant prognostic value for long-term recovery and care needs after stroke.