Stroke:用PET评估颈动脉狭窄患者复发性脑卒中的风险!

2020-03-17 shaosai MedSci原创

在症状性颈动脉内膜剥脱术随机试验中,仅有中度狭窄的患者可能从中获益,有些重度狭窄的患者从中并无法获益。颈动脉斑块18F-氟脱氧葡萄糖PET能够反映斑块炎症反应,能够预测复发性脑卒中。

背景和目的

在症状性颈动脉内膜剥脱术随机试验中,仅有中度狭窄的患者可能从中获益,有些重度狭窄的患者从中并无法获益。颈动脉斑块18F-氟脱氧葡萄糖PET能够反映斑块炎症反应,能够预测复发性脑卒中。本研究旨在评价是否狭窄程度及斑块炎性反应能够提高早期识别复发性脑卒中率。

方法

本研究回顾性分析近期(<30天)非严重脑卒中/一过性脑缺血发作人群并建立评分系统。收集SCIL(症状性颈动脉斑块炎性反应并管腔狭窄)评分(范围:0-5)数据包括:18F-氟脱氧葡萄糖标准化摄取值(SUVmax <2 g/mL, 0 分; SUVmax 2-2.99 g/mL, 1 分; SUVmax 3-3.99 g/mL, 2 分; SUVmax ≥4 g/mL, 3 分)和狭窄程度 (<50%, 0 分; 50%-69%, 1分; ≥70%, 2 分)。 首先在独立的2个队列中验证评分系统,在轻中度狭窄患者中,探究SCIL评分鉴别复发性脑卒中的价值。

结果

在推导队列中(109例患者),随着SCAIL评分增加,复发性脑卒中风险增加(P=0.002, C statistic 0.71 [95% CI, 0.56-0.86])。经调整年龄、性别、吸烟史、高血压、糖尿病、抗血小板和他汀药物史等因素,SCAIL评分每升高1分,风险比(HR)增加2.4 (95% CI, 1.2-4.5, P=0.01)。推导结果在验证队列得到验证(87例患者 ,HR为2.9 [95% CI, 1.9-5], P<0.001; C 统计为0.77 [95% CI, 0.67-0.87])。在做PET检查后(调整后HR为4.52 [95% CI, 1.58-12.93], P=0.005),SCAIL评分能够独立预测复发性脑卒中(C 为0.82 [95% CI, 0.66-0.97], P=0.04)。同样,推导队列结果在轻中度狭窄患者队列中得到确认(调整后HR为2.74 [95% CI, 1.39-5.39], P=0.004)。

结论

本研究表明,SCAIL评分有助于识别早期复发性脑卒中。尚需随机试验来验证是否联合狭窄程度-炎症反应策略能够优化颈动脉狭窄再通患者的选择。

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    2020-04-09 feather89
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    2020-03-17 健健

    卒中虽然是临床上常见病,溶栓,取栓等血管内治疗也很成熟,但是仍然有很多未知问题有待认知!

    0

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