Methods:Left ventricular mass index(LVMI),plasma ANF was measured in the rat model by abdominal aortic constriction.Plasma ANF was measured by radioimmunoassay.

• 方法：采用实验性腹主动脉银夹狭窄大鼠模型，观察左室重量指数(LVMI)，放免测定血浆ANF。