Armstrong W F
University of Michigan Hospital, Department of Internal Medicine, University of Michigan Medical School, Ann Arbor 48109.
Circulation. 1991 Sep;84(3 Suppl):I43-9.
Stress echocardiography is a relatively new technique that combines cardiovascular stress with echocardiographic imaging for the diagnosis of coronary artery disease. It is based on the hypothesis that stress-induced ischemia will result in regional wall motion abnormalities that can be detected by two-dimensional echocardiography or abnormalities of global function that can be detected with Doppler ultrasound. Its accuracy for detecting coronary artery disease is high enough to allow for clinical use. In such a role it has added value to the analysis of the routine electrocardiogram and symptoms during exercise. In the patient unable to exercise, pharmacological stress with the use of dobutamine or dipyridamole are realistic alternatives. In addition to the diagnosis of coronary disease, stress echocardiography can be used to demonstrate recovery of function after interventions and to assess prognosis after myocardial infarction.
负荷超声心动图是一种相对较新的技术，它将心血管负荷与超声心动图成像相结合，用于诊断冠状动脉疾病。其基于这样一种假设，即负荷诱发的心肌缺血会导致节段性室壁运动异常，这可以通过二维超声心动图检测到，或者导致整体功能异常，这可以用多普勒超声检测到。其检测冠状动脉疾病的准确性足够高，可用于临床。在这方面，它为运动期间常规心电图和症状的分析增加了价值。对于无法运动的患者，使用多巴酚丁胺或双嘧达莫进行药物负荷是切实可行的替代方法。除了诊断冠心病外，负荷超声心动图还可用于证明干预后功能的恢复以及评估心肌梗死后的预后。
