RESUMO
Objective To observe the clinical efficacy and anticoagulant effects and safety of low-molecular-weight heparin (LMWH) on treatment of refractory nephrotic syndrome(NS).Methods 33 patients of primary NS complicated with hypercoagulability were randomly divided into two groups: the control and the treatment groups. The control group was treated with prednisolone(1mg/kg/d) plus oral cyclophosphamide (50mg bid) and methylprednisolone 0 5～1g(20mg/kg/time) in glucose 250ml(5%) intravenously by drip . While the treated group was administered, on the basis of the therapeutic scheme of the control group, with subcutaneous injection of LMWH (5000IU bid) for 4 weeks, the clinical symptom was observed in both groups before and after the treatment ,the 24h urine protein quantitative determination,renal function,anti thrombin III (AT-III) activity,fibrinogen(FIB),D-dimer(DD),plasma factor Xa( Fxa),plasma factor IIa(FIIa) were also tested, the side effects in two groups were observed at the same time. Results The 24h urine protein quantitative determination,blood urea nitrogen(BUN) and serum Cr were significantly decreased(P