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KMID : 0361420110350040460
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Journal of Korean Academy of Rehabilitation Medicine
2011 Volume.35 No. 4 p.460 ~ p.469
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The Factors Associated with Good Responses to Speech Th erapy Combined with Transcranial Direct Current Stimulation in Post-stroke Aphasic Patients
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Jung Il-Young
Lim Jong-Youb
Kang Eun-Kyoung
Sohn Hae-Min
Park Nam-Jong
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Abstract
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Objective: To determine factors associated with good responses to speech therapy combined with transcranial direct current stimulation (tDCS) in aphasic patients after stroke.
Method: Th e language function was evaluated using Korean version of Western aphasia battery (K-WAB) before and after speech therapy with tDCS in 37 stroke patients. Patients received speech therapy for 30 minutes over 2 to 3 weeks (10 sessions) while the cathodal tDCS was performed to the Brodmann area 45 with 1 mA for 20 minutes. We compared the improvement of aphasia quotient % (AQ%) between two evaluation times according to age, sex, days after onset, stroke type, aphasia type, brain lesion confi rmed by magnetic resonance image and initial severity of aphasia. Th e factors related with good responses were also checked.
Results: AQ% improved from pre- to post-therapy (14.94±6.73%, p<0.001). AQ% improvement was greater in patients with less severe, fl uent type of aphasia who received treatment before 30 days since stroke was developed (p<0.05). Th e adjusted logistic regression model revealed that patients with hemorrhagic stroke were more likely to achieve good responses (odds ratio=4.897, p<0.05) relative to infarction. Initial severity over 10% in AQ% was also found to be signifi cantly associated with good improvement (odds ratio=8.618, p<0.05).
Conclusion: Speech therapy with tDCS was established as a treatment tool for aphasic patients after stroke. Lower initial severity was associated with good responses.
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KEYWORD
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Stroke, Aphasia, Speech therapy, Recovery, Transcranial direct current stimulation
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