Objective To study the plasma D-dimer clinical value in the diagnosis of senile acute pulmonary embolism. Methods Automatic immunoassay system fast quantitative detection of plasma D-dimer method, 30 cases of elderly acute pulmonary embolism in patients with plasma fibrin degradation product D-dimer for testing, and compared with 30 cases of healthy check-up plasma D-dimer level contrast. Results The patients with pulmonary embolism group plasma DD (549.5 ±27.3) ng/ml, 30 cases>230 ng/ml, positive rate was 90%. In the control group (124.3± 15.1) ng/ml. Two groups of plasma D-dimer average compared with statistically significant difference (P<0.05). Conclusion Plasma D-dimer of elderly acute pulmonary embolism has certain help early diagnosis.%目的：探讨血浆 D-二聚体在老年急性肺栓塞诊断中的临床价值。方法采用自动免疫分析系统快速定量检测血浆 D-二聚体法，对30例急性老年肺栓塞患者血浆中纤维蛋白降解产物 D-二聚体进行检测，并与30例健康体检者血浆 D-二聚体水平对比。结果肺栓塞组患者血浆 DD（549.5±27.3）ng/ml，＞230 ng/ml 者30例，阳性率90%。对照组（124.3±15.1）ng/ml。两组血浆 D-二聚体平均值相比较有差异统计学意义（P ＜0.05）。结论血浆 D-二聚体对老年急性肺栓塞早期诊断有一定帮助。
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