Methods: 21 healthy rabbits were enrolled in this study. Absorbable gelatin sponge were injected as embolia into Era-vein of rabbits to build the animal model of acute pulmonary embolism after one week normal feeding. 方法:健康家兔21只,饲养一周后均经耳缘静脉注入明胶海绵栓子制成急性肺动脉栓塞模型。