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Severe dysarthria with right hemisphere stroke.

A H Ropper

    Neurology
    |June 1, 1987
    PubMed
    Summary
    This summary is machine-generated.

    Right hemisphere strokes can cause severe dysarthria (slurred speech), even without other brain damage. This study highlights that damage to the right frontal operculum alone can lead to significant speech impairment.

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    Area of Science:

    • Neurology
    • Neuroscience
    • Speech Pathology

    Background:

    • Dysarthria is a common consequence of stroke.
    • The specific role of right hemisphere lesions in isolated severe dysarthria is not fully elucidated.
    • Oropharyngeal weakness frequently accompanies motor deficits post-stroke.

    Purpose of the Study:

    • To investigate the direct link between right hemisphere stroke and severe dysarthria.
    • To determine if right hemisphere lesions alone can cause significant speech impairment.
    • To identify the specific brain regions implicated in stroke-induced dysarthria.

    Main Methods:

    • Case series presentation of ten patients with severe dysarthria following right hemisphere stroke.
    • Clinical assessment of oropharyngeal weakness and hemiparesis.

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  • Review of neuroimaging (CT/MRI) and autopsy findings to correlate lesion location with symptoms.

    • Main Results:

    • All ten patients presented with severe dysarthria.
    • Four patients underwent autopsy, confirming the lesion.
    • Right hemisphere lesions, including small infarctions in the right frontal operculum, were sufficient to cause severe dysarthria.
    • Oropharyngeal weakness was common; hemiparesis varied in severity.

    Conclusions:

    • Severe dysarthria can result solely from a right hemisphere stroke.
    • The right frontal operculum is a critical area for speech production, and its infarction can lead to severe dysarthria.
    • Clinicians should consider right hemisphere lesions in the differential diagnosis of severe dysarthria.