Multifactorial interplay on language recovery following left-hemispheric stroke: A retrospective study

Area of Science:

• Neurology
• Speech and Language Pathology

Background:

• Aphasia is a common consequence of left-hemispheric stroke, impacting communication and quality of life.
• Optimizing neurorehabilitation requires understanding factors influencing aphasia severity and recovery.

Purpose of the Study:

• To investigate sociodemographic, cognitive, clinical, stroke-related, and rehabilitation-related factors influencing initial aphasia severity and language recovery.
• To explore the combined impact of these factors using a novel retrospective analysis method.

Main Methods:

• Retrospective analysis of 96 stroke participants.
• Categorization of initial aphasia severity using the Aphasia Severity Rating Scale (ASRS).
• Assessment of speech and language recovery using a gain score formula and statistical analyses including logistic regression.

Main Results:

• More severe initial aphasia correlated with more severe stroke, moderate/severe executive dysfunction, and larger lesion size.
• The intensity of speech and language therapy was associated with a greater degree of language recovery.
• Identified key determinants for both initial aphasia severity and subsequent recovery.

Conclusions:

• Stroke severity, executive dysfunction, and lesion size are significant predictors of initial aphasia severity.
• Therapeutic intensity is a crucial factor for enhancing language recovery post-stroke.
• Findings support personalized neurorehabilitation strategies to maximize speech and language outcomes.