Language dysfunctions in stroke.

Bobby, E (2014) Language dysfunctions in stroke. Masters thesis, Tirunelveli Medical College, Tirunelveli.


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Worldwide stroke is one of the leading causes of death, with stroke mortality being very high in Asia and Eastern Europe according to WHO (2004). The annual stroke death in developing countries by 2020 is estimated to be around 19 out of 25 millions. Stroke not only causes death, but also worse disabilities in adults. Among the stroke survivors, approximately 30% require assistance for daily living, 20% require assistance for ambulation and 16% require institutional services. Among the disabilities of stroke, post stroke language disorders are frequent which include aphasia, alexia, agraphia, acalculia and apraxias. Aphasia, being a common consequence of left hemispheric lesion is one of the most common neuro psychological consequences of stroke, prevalent in nearly one third of all stroke patients. Recovery pattern of aphasias vary in various aphasias. Aphasia, the loss or impairment of language caused by brain damage, is one of the most devastating cognitive impairments of stroke. Aphasia is observed with the frequency ranging from 21% to 38% in acute patients, and stroke accounts for most of the new cases of aphasia seen in neurological practice. The community incidences 43 / 1,00,000 per year and the prevalence is 3000 per million. The presence of aphasia is an index of poor prognosis, with more severe motor, 2 cognitive and social disability and higher mortality. Aphasia outcome remains poor – 32% to 50% of aphasics still suffer from aphasia six months after stroke. Therefore it is important to evaluate and treat post stroke aphasias. The incidence of stroke follows a rising trend in India. Post stroke language disorders are frequent and disable the quality of life. There is necessity to differentiate and classify aphasias for prognosis and outcome assessment. By more precise and detailed description of the language functions of the brain damaged subjects, it is possible to plan novel reeducative strageties and to monitor their recovery in performance. Early rehabilitation for language dysfunction and other associated neurological deficits restores the quality of life in affected subjects. Aphasia treatment have so far have been given less importance by physicians and speech therapists. Studies regarding language dysfunction are less in our place. The aim of this study is to determine the characteristics of aphasia in stroke, the influence of age, sex and various other risk factors, the type of aphasia, its severity and to correlate the type of aphasia with imaging studies. AIM OF THE STUDY: The aims of the study are 1. To find out the different types of aphasias prevalent among adult stroke patients attending Medicine and Neuromedicine departments of Tirunelveli Medical College hospital. 2. To study the recovery patterns among the different types of aphasias. 3. To correlate the types of aphasias with the imaging CT/MRI. 4. To study the factors influencing the outcome of Aphasias. CONCLUSION: Global aphasia is the most common aphasic syndrome in acute stroke patients followed by Wernicke‘s aphasia, Broca‘s aphasia, Transcortical motor aphasia and Conduction aphasia. Age and sex did not differ significantly in various types of aphasia. Recovery in patients with aphasia due to stroke is a dynamic process with evolution of aphasia from one type to another. There was some improvement in language function as reflected by the aphasia quotient in most of the patients followed up. The type of aphasia change to a less severe form in 30.1%. Patients with Global aphasia evolved into Broca‘s aphasia in 15 patients out of 40 patients. Out of the 10 Broca‘s aphasia patients, 4 evolved into Transcortical motor aphasia. Significant improvement was noted after 12th week of stroke. Hypertension and Diabetes were the major risk factors. There was a good correlation with the clinical – anatomical location of lesion and imaging.

Item Type: Thesis (Masters)
Uncontrolled Keywords: Language dysfunctions ; stroke.
Subjects: MEDICAL > Neurology
Depositing User: Kambaraman B
Date Deposited: 03 Jul 2017 08:38
Last Modified: 03 Jul 2017 08:38

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