Before and after treamet, levels of mean pulmonary artery pressure (mPAP), plasma endothelin (ET) - 1, fibrinogen(Fg) and D -dirner(D-D) were measured.

• 测定两组治疗前后平均肺动脉压(mPAP)、血浆内皮素-1(EF-1)、纤维蛋白原(Fg)及D-二聚体(D-D)水平。