摘要
Abstract
Objective To study the quantitative electroencephalogram(QEEG) power spectrum changes in patients with carotid stenosis before and after the carotid artery stenting(CAS) and explore its value for assessing the improvement in brain function in these patients after CAS.Methods This retrospective study was conducted in 36 patients performed CAS in Binzhou Medical University Hospital from January 2014 to October 2015.Electroencephalogram(EEG) was performed in the patients before and after the procedure and the results were recorded.The relative power ratio of (δ﹢θ)/(α﹢β)(DTABR) at bilateral prefrontal electrodes(FP1,FP2),central electrodes(C3,C4),occipital electrodes(O1,O2) and temporal electrodes(T3,T4) in the patients after CAS were calculated and compared with those before the procedure.Results Before the procedure,EEG results were normal in 9 cases,mild abnormalities in 15 cases,moderate abnormalities in 10 cases,and severe abnormalities in 2 cases;after the procedure,EEG results were normal in 12 cases,mild abnormalities in 17 cases,moderate abnormalities in 6 cases,and severe abnormalities in 1 case,which showed that the EEG results of the patients before and after the CAS had no significant differences(Z=-1.882,P=0.060).Compared with before the CAS,after the CAS,DTABR at bilateral occipital electrodes(O1,O2) did not change significantly(P>0.05),but the DTABR at bilateral prefrontal electrodes(FP1,FP2),central electrodes(C3,C4),and temporal electrodes(T3,T4) decreased substantially(P<0.05).Conclusion QEEG changed a lot at the prefrontal areas after the CAS,which may be associated with the cerebral carotid artery blood flow distribution.So QEEG can be regarded as an effective index for evaluating the degree of improvement in brain function in patients with carotid stenosis after CAS.关键词
颈动脉狭窄/支架/定量脑电图/相对功率比Key words
Carotid stenosis/Stents/Quantitative electroencephalogram/Relative power ratio分类
医药卫生
