RESUMO
<p><b>OBJECTIVE</b>To observe the therapeutic effect of the low molecular weight heparin calcium (LMWHC) combined with Yinxin Damo Injection (YDI) on the prevention of deep venous thrombosis (DVT) after the operation of intertrochanteric fracture.</p><p><b>METHODS</b>Sixty-two patients with intertrochanteric fracture were randomly assigned to the control group and the combined group, 31 in each group. Patients in the control group were subcutaneously injected with 6 000 IU LMWHC, twice daily. On this basis of the aforesaid treatment, patients in the combined group were intravenously dripped with YDI at the daily dose of 20 mL, once daily. The treatment lasted for 10 days in both groups. The DVT incidence rate, postoperative drainage amount of blood, activated partial thromboplastin time (APTT), plasma prothrombin time (PT), platelet count, and the maximal swelling rate of lower limbs after surgery were compared between the two groups after operation.</p><p><b>RESULTS</b>In the control group DVT occurred in 5 cases (16. 1%) while it occurred in 2 cases (6.5%) in the combined group, showing significant differences (P < 0.05). Both APTT and PT were shortened in the two groups on the 2nd day after medication (P < 0.01). Compared with the control group, it was more obvious in the combined group, showing statistical significance (P < 0.05). Both APTT and PT were shortened in the control group on the 10th day after medication when compared with before treatment (P < 0.01). But they were postponed in the combined group when compared with before medication, showing statistical difference when compared with the control group (P < 0.05). The platelet count increased in the combined group on the 10th day after medication. Besides, it was higher than that in the control group, showing statistical difference (P < 0.05). The platelet counts were in the normal range.</p><p><b>CONCLUSIONS</b>LMWSC combined with YDI could not only reduce the incidence of DVT after the operation of intertrochanteric fracture, but also change the state of higher blood coagulation. It showed significant effect on preventing DVT after the operation of intertrochanteric fractures.</p>