Mackenzie Catherine
School of Psychological Sciences and Health, University of Strathclyde, Southbrae Drive, Glasgow G13 1PP, UK.
Int J Speech Lang Pathol. 2011 Apr;13(2):125-36. doi: 10.3109/17549507.2011.524940.
Dysarthria is a frequent and persisting sequel to stroke and arises from varied lesion locations. Although the presence of dysarthria is well documented, for stroke there are scant data on presentation and intervention outcome. A literature search was undertaken to evaluate (a) the features of dysarthria in adult stroke populations relative to the conventional Mayo system for classification, which was developed from diverse pathological groups, and (b) the current status of evidence for the effectiveness of intervention in dysarthria caused by stroke. A narrative review of results is presented. The limited data available indicate that, regardless of stroke location, imprecise articulation and slow speaking rate are consistent features, and voice disturbances, especially harshness, and reduced prosodic variation are also common. Dysarthria is more prevalent in left than in right hemisphere lesions. There is a need for comprehensive, thorough analysis of dysarthria features, involving larger populations, with stroke and other variables controlled and with appropriate age-referenced control data. There is low level evidence for benefits arising from intervention in stroke-related dysarthria. Because studies involve few participants, without external control, and sometimes include stroke with other aetiologies, their results lack the required weight for confident evidence-based practice.
构音障碍是中风常见且持续存在的后遗症，由多种病变部位引起。尽管构音障碍的存在已有充分记录，但关于中风后构音障碍的表现及干预效果的数据却很少。进行了一项文献检索，以评估：（a）相对于从不同病理群体发展而来的传统梅奥分类系统，成人中风群体中构音障碍的特征；（b）中风所致构音障碍干预效果的现有证据状况。本文对结果进行了叙述性综述。现有有限数据表明，无论中风部位如何，发音不精确和语速缓慢是一致的特征，嗓音障碍，尤其是粗糙感，以及韵律变化减少也很常见。构音障碍在左侧半球病变中比右侧半球病变中更普遍。需要对构音障碍特征进行全面、深入的分析，涉及更多人群，控制中风及其他变量，并具备适当的年龄对照数据。关于中风相关性构音障碍干预有益效果的证据质量较低。由于研究参与者较少，缺乏外部对照，且有时纳入了其他病因导致的中风，其结果缺乏基于循证实践所需的说服力。
