血管内治疗后颅内高密度/静脉窦最大密度比值预测急性缺血性脑卒中患者脑出血转化

Ratio of postinterventional cerebral hyperdensities/venous sinus maximum density for predicting hemorrhagic transformation after endovascular treatment in patients with acute ischemic stroke

目的观察血管内治疗(EVT)后颅内高密度(PCHD)/静脉窦最大密度比值预测急性缺血性脑卒中(AIS)患者脑出血转化(HT)的价值。方法 回顾性分析79例EVT后即刻可见PCHD的AIS患者资料,根据有无HT将其分为HT组(n=41)及无HT组(n=38);比较组间临床资料和CT参数,分析PCHD/静脉窦最大密度比值预测HT的价值。结果 HT组PCHD最大密度及PCHD/静脉窦最大密度比值均大于无HT组(P均<0.001)。以87 HU为PCHD最大密度的最佳截断值,其预测AIS患者EVT后HT的敏感度、特异度及曲线下面积(AUC)分别为90.24%、71.05%及0.79;以0.94为PCHD/静脉窦最大密度比值的最佳截断值,敏感度、特异度及AUC分别为97.56%、71.05%及0.81;二者AUC差异无统计学意义(P>0.05)。结论 EVT后即刻出现的PCHD/静脉窦最大密度比值可用于预测AIS患者HT。

Objective To observe the value of the ratio of cerebral hyperdensities(PCHD)/venous sinus maximum density for predicting hemorrhagic transformation(HT)after endovascular treatment(EVT)in patients with acute ischemic stroke(AIS).Methods Data of 79 AIS patients with PCHD immediately after EVT were retrospectively analyzed.The patients were divided into HT group(n=41)or non-HT group(n=38)based on the presence of HT or not.Clinical data and CT parameters were compared between groups.The value of the ratio of PCHD/venous sinus maximum density for predicting HT was evaluated.Results The maximum density of PCHD and the ratio of PCHD/venous sinus maximum density in HT group were both higher than those in non-HT group(both P<0.001).Taken 87 HU as the best cut-off value of the maximum density of PCHD,the sensitivity,specificity and area under the curve(AUC)for predicting HT after EVT in AIS patients was 90.24%,71.05%and 0.79,respectively.Taken 0.94 as the best cut-off value of the ratio of PCHD/venous sinus maximum density,the sensitivity,specificity and AUC was 97.56%,71.05%and 0.81,respectively.No significant difference of AUC was found between the former and the latter(P>0.05).Conclusion The ratio of PCHD/venous sinus maximum density immediately after EVT could be used to predict HT in AIS patients.