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中青年隐源性缺血性脑卒中患者卵圆孔未闭的超声检测及机制

  

  1. 兰州大学第二医院 脑超声科,甘肃 兰州 730030
  • 出版日期:2017-07-05 发布日期:2017-07-11
  • 通讯作者: 通信作者:王欣,Email: 372802125@qq.com

Ultrasound detection of patent foramen ovale in young and middleaged patients  with cryptogenic stroke and mechanism

  1. Department of Cerebral Ultrasound,  Lanzhou University Second Hospital, Lanzhou 730030,China
  • Online:2017-07-05 Published:2017-07-11
  • Contact: Corresponding author: Wang Xin, Email: 372802125@qq.com

摘要: 目的 探讨经颅多普勒超声(transcranial Doppler,TCD)对中青年隐源性缺血性脑卒中(cryptogenic ischemic stroke,CS)患者卵圆孔未闭(patent foramen ovale,PFO)的诊断价值及卒中机制。方法  70例中青年CS患者为CS组,70例年龄、性别相匹配的健康者为正常对照组。采用TCD并进行发泡实验,配合Valsava动作检测PFO及右向左分流(righttoleft shunt,RLS)程度;超声心动图检测房间隔瘤(atrial septal aneurysm,ASA);彩色多普勒超声检测下肢深静脉血栓(deep venous thrombosis,DVT)。血纤维蛋白原含量采用免疫比浊法、血小板聚集率采用比浊法测定。结果  对照组和CS组PFO检出率分别为5.71%、92.86%,RLS轻、中、重度发生率分别为5.71%、0.00%、0.00%及11.42%、41.42%、40.00%,PFO合并ASA发生率分别为1.43%、18.57%,PFO合并DVT发生率分别为2.86%、21.43%,差异均有统计学意义(P<0.01)。与对照组比较CS组纤维蛋白原含量及血小板聚集率明显升高(P<0.01)。结论  TCD发泡实验,配合Valsava动作诊断中青年CS的PFO具有较高敏感性,适用于PFO的筛查和诊断。PFO致CS的机制可能与反常栓塞的形成有关。

关键词: 超声检查, 多普勒, 经颅;卵圆孔, 未闭;卒中;栓塞

Abstract: Objective  To investigate the transcranial Doppler(TCD) for detection of patent foramen ovale(PFO) in young and middleaged patients with cryptogenic ischemic stroke(CS) and the mechanism of stroke. Methods   The subjects were divided into two groups: CS patient group 70 young and middleaged patients with CS; normol control group 70 healthy persons with matched age and sex for CS group. PFO and the extent of righttoleft shunt(RLS) were  detected by TCD with bubble study and under Valsava maneuver(VM). The atrial septal aneurysm(ASA) was detected by transthoracic echocardiography(TTE) and the deep venous thrombosis(DVT) was detected by color Doppler flow imaging(CDFI). The fibrinogen and platelet aggregation were tested by cluse assay and turbidimetry assay.Results   The prevalence of PFO. PFO with ASA, PFO with DVT and the extent of RLS were significantly higher in CS group than those in normal control group (P<0.01). Compared with normal control group,  the fibrinogen and the frequencies of platelet aggregation in CS group significantly increased(P<0.01). Conclusion  TCD is an excellent method for PFO identification with high sensibility with contrastenhanced and under VM in young and middleaged patients with CS. The mechanism of  PFO induce ischemic stroke may relate to formed of paradoxical embolism.

Key words: ultrasongraphy, doppler, transcranial, foramon ovale, patent, stroke, embolism