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血浆D—二聚体水平在急性主动脉夹层和急性心肌梗死患者中鉴别诊断意义

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【摘要】 目的 探讨血浆D-二聚体水平在急性主动脉夹层(AAD)和急性心肌梗死(AMI)患者中鉴别诊断意义。方法 25例AAD(AAD组)及40例AMI(AMI组)患者, 采用免疫比浊法检测D-二聚体水平, 比较AAD组与AMI组患者D-二聚体水平, 及AAD不同分型D-二聚体水平差异, 采用ROC曲线评估D-二聚体在AAD中诊断临界值, 并根据临界值判定D-二聚体在AAD中诊断灵敏度、特异性。结果 AAD组患者血浆D-二聚体水平显著高于AMI组患者, 差异有统计学意义(P<0.05)。AAD Stanford A型和Stanford B型患者血浆D-二聚体水平比较差异无统计学意义(P>0.05)。采用ROC曲线评估D-二聚体在AAD中诊断临界值为5000 μg/L。以D-二聚体为5000 μg/L为诊断标准, 本次研究65例患者中24例诊断为AAD, 诊断灵敏度为88.00%, 特异性为95.00%。结论 血浆D-二聚体在AAD中诊断具有较高灵敏度和特异性, 在AAD和AMI中鉴别诊断具有较高临床参考价值。

【关键词】 D-二聚体;急性主动脉夹层;急性心肌梗死

DOI:10.14163/j.cnki.11-5547/r.2017.08.004

【Abstract】 Objective To investigate significance by plasma D-dimer in differential diagnosis of acute aortic dissection (AAD) and acute myocardial infarction (AMI) patients. Methods There were 25 AAD patients (AAD group) and 40 AMI patients (AMI group) and, their D - dimer level was detected by immunoturbidimetry method. Comparison was made on D-dimer levels between AAD group and AMI group, and difference of D-dimer in different type cases in AAD group. ROC curve was applied to evaluate AAD diagnosis critical value by D-dimer, which was taken to determine sensitivity and specificity by D-dimer in diagnosis of AAD. Results AAD group had obviously higher plasma D-dimer level than AMI group, and their difference had statistical significance (P<0.05). There was no statistically si...

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