Methods: The animal model of aucte myocardial ischemia was reproduced in anesthetized rabbit by ligating the left coronary artery at the middle of anterior descending branch.

• 方法:通过结扎麻醉兔冠状动脉左前降支中段,造成急性心肌缺血模型,采用放射免疫法测定血浆ET含量,用比色法测定NOS的含量。