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Reduced white-matter integrity and lower speed of information processing in adolescents with mild and moderate neonatal hypoxic-ischaemic encephalopathy
European Journal of Paediatric Neurology ( IF 3.1 ) Pub Date : 2020-09-01 , DOI: 10.1016/j.ejpn.2020.06.003
David Gosar 1 , Vali Tretnjak 1 , Tina Bregant 2 , David Neubauer 1 , Metka Derganc 3
Affiliation  

INTRODUCTION Studies have shown that adolescents with moderate hypoxic-ischaemic encephalopathy (HIE) may have specific cognitive deficits, especially reduced speed of information processing. The aim of our study was to confirm these earlier findings find out whether the degree of impairment in speed of information processing correlates with the degree of white-matter impairment as measured by diffusion tensor imaging (DTI). METHODS Thirty-three participants (mean age 18y 5mo, SD 12mo; 19 male) with mild or moderate HIE and 32 neurotypical adolescents (mean age 17y 10mo, SD 12mo, 18 male) completed a comprehensive neuropsychological battery measuring short-term memory, inhibition, speed of information processing, long-term visual and verbal memory. Fourteen participants also underwent structural MRI and DTI scans. RESULTS After controlling for age, gender and maternal education we found a significant effect of HIE on speed of information processing (F(2, 64) = 3.51, p < .037, η2 = 0.115), but not on other neuropsychological domains. Using tract-based spatial statistics we were also able to confirm a correlation between the degree of impairment in this cognitive domain and fractional anisotropy in several white-matter tracts. CONCLUSIONS The long-term cognitive outcome of moderate HIE includes reduced speed of information processing and is in part mediated by reduced integrity of major white-matter tracts.

中文翻译:

轻度和中度新生儿缺氧缺血性脑病青少年白质完整性降低和信息处理速度降低

引言 研究表明,患有中度缺氧缺血性脑病 (HIE) 的青少年可能存在特定的认知缺陷,尤其是信息处理速度减慢。我们研究的目的是确认这些早期的发现,以确定信息处理速度的受损程度是否与通过弥散张量成像 (DTI) 测量的白质受损程度相关。方法 33 名患有轻度或中度 HIE 的参与者(平均年龄 18 岁 5 个月,SD 12 个月;19 名男性)和 32 名神经典型青少年(平均年龄 17 岁 10 个月,SD 12 个月,18 名男性)完成了一项全面的神经心理学电池测量,测量短期记忆、抑制,信息处理速度,长期视觉和语言记忆。14 名参与者还接受了结构 MRI 和 DTI 扫描。结果 控制年龄后,在性别和母亲教育方面,我们发现 HIE 对信息处理速度有显着影响(F(2, 64) = 3.51, p < .037, η2 = 0.115),但对其他神经心理学领域没有影响。使用基于束的空间统计数据,我们还能够确认该认知域中的损伤程度与几个白质束中的分数各向异性之间的相关性。结论 中度 HIE 的长期认知结果包括信息处理速度的降低,部分是由主要白质束的完整性降低引起的。使用基于束的空间统计数据,我们还能够确认该认知域中的损伤程度与几个白质束中的分数各向异性之间的相关性。结论 中度 HIE 的长期认知结果包括信息处理速度的降低,部分是由主要白质束的完整性降低引起的。使用基于束的空间统计数据,我们还能够确认该认知域中的损伤程度与几个白质束中的分数各向异性之间的相关性。结论 中度 HIE 的长期认知结果包括信息处理速度的降低,部分是由主要白质束的完整性降低引起的。
更新日期:2020-09-01
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