Ann Rehabil Med.  2016 Oct;40(5):786-793. 10.5535/arm.2016.40.5.786.

The Prognosis and Recovery of Aphasia Related to Stroke Lesion

Affiliations
  • 1Department of Rehabilitation Medicine, St. Vincent Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea. seonghoon@catholic.ac.kr

Abstract


OBJECTIVE
To investigate the effects of specific brain lesions on prognosis and recovery of post-stroke aphasia, and to assess the characteristic pattern of recovery.
METHODS
Total of 15 subjects with first-ever, left hemisphere stroke, who were right handed, and who completed language assessment using the Korean version of the Western Aphasia Battery (K-WAB) at least twice during the subacute and chronic stages of stroke, were included. The brain lesions of the participants were evaluated using MRI-cron, SPM8, and Talairach Daemon software.
RESULTS
Subtraction of the lesion overlap map of the participants who showed more than 30% improvement in the aphasia quotient (AQ) by the time of their chronic stage (n=9) from the lesion overlap map of those who did not show more than 30% improvement in the AQ (n=6) revealed a strong relationship with Broca's area, inferior prefrontal gyrus, premotor cortex, and a less strong relationship with Wernicke's area and superior and middle temporal gyri. The culprit lesion related to poor prognosis, after grouping the subjects according to their AQ score in the chronic stage (a cut score of 50), revealed a strong relationship with Broca's area, superior temporal gyrus, and a less strong relationship with Wernicke's area, prefrontal cortex, and inferior frontal gyrus.
CONCLUSION
Brain lesions in the Broca's area, inferior prefrontal gyrus, and premotor cortex may be related to slow recovery of aphasia in patients with left hemisphere stroke. Furthermore, involvement of Broca's area and superior temporal gyrus may be associated with poor prognosis of post-stroke aphasia.

Keyword

Stroke; Aphasia; Prognosis; Recovery

MeSH Terms

Aphasia*
Brain
Broca Area
Hand
Humans
Motor Cortex
Prefrontal Cortex
Prognosis*
Stroke*
Temporal Lobe
Wernicke Area
Full Text Links
  • ARM
Actions
Cited
CITED
export Copy
Close
Share
  • Twitter
  • Facebook
Similar articles
    DB Error: unknown error