颈内动脉和大脑中动脉重度狭窄和闭塞患者脑梗死模式与发病机制——回顾性队列研究

被引:11
作者
张慧
马召玺
温仲民
赵合庆
机构
[1] 苏州大学附属第二医院神经内科
关键词
脑梗死; 颈动脉狭窄; 大脑中动脉; 颅内动脉硬化; 弥散磁共振成像; 血管造影术,数字减影; 磁共振血管造影术; 颅内栓塞;
D O I
暂无
中图分类号
R743.3 [急性脑血管疾病(中风)];
学科分类号
1002 ;
摘要
目的探讨颈内动脉(internal carotid artery,ICA)和大脑中动脉(middle cerebral artery,MCA)重度狭窄(狭窄程度70%~99%)或闭塞患者脑梗死模式和机制,为个体化防治提供依据。方法回顾性分析76例急性脑梗死患者的弥散加权成像(diffusion-weighted imaging DWI)显示的相应MCA供血区责任病灶,根据血管检查将患者分为ICA病变组、MCA病变组以及数字减影血管造影或CT血管造影检查结果阴性组(negative results,NR)。将梗死灶分为单发和多发,前者按部位分为穿支动脉梗死(perforating artery infarct,PAI)、皮质支梗死(pial infarct,PI)和分水岭区梗死(border-zoneinfarct,BZ)。结果 MCA供血区梗死灶形态分为9种;不同病变导致的梗死灶形态存在差异(x2=34.000,P=0.001)。多发性梗死病灶分布模式占所有患者的73.68%(56/76)。ICA组PAI+PI梗死模式显著多于NR组(17/42对1/16,x2=6.837,P=0.009 )。动脉狭窄程度与梗死灶形态亦存在一定的关联,重度ICA病变更多呈现为PAI伴PI(7/17对1/16,x2=5.475,P=0.019),而重度MCA病变则多呈PAI伴BZ(3/8对1/17,x2=4.046,P=0.040)。结论 ICA或MCA重度狭窄或闭塞的脑梗死患者大多呈现为多发梗死模式,提示卒中发病的不同机制,可能与动脉-动脉栓塞或低灌注有关。
引用
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页码:574 / 579
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