缺血修饰白蛋白早期诊断非ST抬高型急性冠脉综合征的价值探讨

目的 探讨缺血修饰白蛋白(IMA)对非ST抬高型急性冠脉综合征(NSTEACS)的早期诊断价值.方法 177例疑似NSTACS患者于胸痛发作6h内采血,测定心肌肌钙蛋白I(cTnI)；用间接白蛋白钴结合试验(ACB法)测定血清IMA值.且均经标准诊疗以及GRACE评分,并根据最终诊断分为NSTEMI组(n=34)、不稳定型心绞痛(UA)组(n=56)和非缺血性胸痛( NICP)组(n=87).另随机选取本院同期行健康体检者58例作为健康对照组.通过绘制IMA诊断NSTEACS的受试者工作特征(ROC)曲线,取得判定IMA的最佳临界值.将IMA、心电图和cTnI单独或联合诊断与最终诊断进行综合分析.结果 NSTEMI组与UA组IMA水平无显著性差异；NSTEMI组、UA组与NICP组比较,其IMA水平均有显著性差异.ROC曲线下面积0.950,Cut-off值取67.49 U/mL时,诊断NSTEACS的敏感性和特异度分别为91.1％和86.2％.IMA水平与GRACE评分呈显著负相关.结论IMA是早期诊断NSTEACS的敏感指标,并有助于判断患者的预后.

Evaluation on Ischemia Modified Albumin in the Early Diagnosis of Non-St-Segment Elevation Acute Coronary Syndromes

Objective To evaluate the early diagnostic value of ischemia modified albumin(IMA) for non-ST-segment elevation acute coronary syndromes(NSTEACS).Methods The study group consisted of 177 patients with suspected NSTEACS whose blood was collected within six hours after the onset of chest pain to determine cardiac troponin I(cTnI),and IMA was determined through the albumin cobalt binding(ACB) test.After standardized diagnosis and treatment and GRACE risk score,the patients then were divided into three groups a...