Objective:To evaluate the alteration and its significance of left vcntricular volume ( L VV) in the convalescent patients with acute myocardial infarction( AMI) by dobutamine stress echocardiography ( DSE) test.

• 目的 :采用多巴酚丁胺负荷超声心动图 ( DSE)试验评价急性心肌梗死 ( AMI)恢复期患者左室容积 ( L VV)的变化及其意义。