Evaluation of cerebral blood flow with spatial brain symmetry index in patients performed carotid artery stenting / 中华神经医学杂志

ABSTRACT

Objective To detect the spatial brain symmetry index (sBSI) changes, reflected the blood flow changes, before and after the carotid artery stenting (CAS). Methods Thirty one patients performed CAS were examined with electroencephalogram 1 d before and 3～5 d after the procedures. We analyzed the sBSI of EEG. The preoperative and postoperative degrees of stenosis were determined according to cerebral angiography. The sBSI changes were compared using paired analysis before and after the procedures. Correlation and regression analysis was processed between EEG sBSI improvement and both stenosis decrement and preoperative sBSI. Results The sBSI of 31 patients were significantly different before and after the stenting (P<0.05). No correlation between the sBSI improvement and the degree of stenosis reduction was found (P>0.05). The sBSI improvement was positively correlated with sBSI before stenting. Conclusions Electroencephalogram spatial brain symmetry index can be regarded as a safe and effective index to evaluate the improved effect of CAS in patients with carotid artery stenosis.