我们的实验曾表明,心肌缺血的局部发生交替电活动,这种变化都发生在中心缺血区,与心外膜电图ST段抬高有一定关系。其他研究也显示交替电活动是缺血心肌的一种表现。对于交替电活动产生的原理尚无统一看法。交感神经兴奋性的改变在心肌缺血过程中起着重要作用。Schwartz的实验证明,刺激交感神经 Our experiments have shown that myocardial ischemic local alternating electrical activity occur, this change occurred in the central ischemic area, and epicardial ST-segment elevation have a certain relationship. Other studies have also shown that alternating electrical activity is a manifestation of ischemic myocardium. There is no uniform view on the principle of alternating electrical activity. Changes in sympathetic excitability play an important role in myocardial ischemia. Schwartz’s experiments prove to stimulate sympathetic nerves