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May 15, 2019

ESOC-2019

PREDICTORS OF INITIAL APHASIA SEVERITY AFTER FIRST EVER ACUTE STROKE: AN OBSERVATIONAL STUDY FROM KOLKATA, INDIA

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aphasia

post-stroke

predictor

severity

Abstract

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Abstract

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Keywords

aphasia

post-stroke

predictor

severity

Abstract

Contemporary studies have highlighted initial severity of aphasia as an important determinant of aphasia recovery. Objective of the present study was to explore the predictors of initial aphasia severity after stroke. Bengali version of western aphasia battery (WAB), a validated scale, was used for language assessment. All patients underwent language examination during first week following stroke. Severity was assessed by calculating aphasia quotient (AQ) and taking into account the severity scale as in WAB. Lesion assessment was done by using Magnetic resonance imaging (3T) for ischemic stroke (if not contraindicated) and computed tomography for hemorrhagic stroke. Demographic factors (age, gender and number of years of formal education), lesion-related factors (type of stroke, lesion volume, cortical versus sub-cortical location and site of lesion) and initial aphasia type were independent variables while initial severity of aphasia (non-severe, AQ=50 or more; severe, AQ<50) was dependant variable. Appropriate statistical tests were performed for data analysis. Among 515 screened cases of first-ever acute stroke, 208 presented aphasia. On univariate analysis the following factors were associated with higher initial severity- hemorrhagic stroke (p=0.000); larger volume of lesion (p=0.000); cortico-subcortical mixed lesion (p=0.000) and non-fluent type of aphasia (p=0.000). In binary logistic regression most robust predictors of higher severity were- higher volume of lesion (p=0.000, OR=1.651); hemorrhagic stroke (p=0.004, OR=11.987) and non-fluent aphasia (p=0.012, OR=4.796). The overall predictive value of the regression model was found 90.4%. The most important determinants of initial severity of post-stroke aphasia in our sample were lesion-related factors and non-fluent type of aphasia.

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© Copyright 2019 Morressier GmbH.
All rights reserved.