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D－二聚体（D－dimer）是纤维蛋白单体经活化因子交联后，再经纤溶酶水解所产生的一种特异性降解产物，其水平增高反映凝血酶生成多和继发性纤溶活性增高，可作为体内高凝状态和继发纤溶亢进的分子标志物之一，是鉴别原发性纤溶和继发性纤溶及判断溶栓疗效的有效指标。D-二聚体
D-dimer (D-dimer) is a specific degradation product of fibrin monomer cross-linked by an activator and then hydrolyzed by plasmin. The level of D-dimer is high and reflects secondary production of thrombin and secondary Fibrinolytic activity increased, can be used as hypercoagulable state and secondary fibrinolysis hyperthyroidism molecular markers, is to identify the primary fibrinolysis and secondary fibrinolysis and determine the effective indicators of thrombolytic efficacy. D-dimer