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为研究在缺血血管床大致相仿情况下影响再灌注心室颤动发生的因素,采用闭胸式冠状动脉内球囊堵塞法制备缺血心肌模型。15条杂种狗的左前降支内插入2F球囊导管,使球囊定位于中隔支与第一对角支之间。在冠脉堵塞前的对照期(20min),缺血期(30min)和再灌注期(20min)间,连续同步记录主动脉压,右房内电
In order to study the factors that affect the occurrence of ventricular fibrillation in the case of ischemic vascular bed, the closed-chest coronary artery occlusion method was used to prepare ischemic myocardium model. Fifteen hybrid dogs were inserted into the left anterior descending branch of the 2F balloon catheter so that the balloon was positioned between the septal branch and the first diagonal branch. During the control period (20min), ischemia (30min) and reperfusion (20min) before coronary artery occlusion, the aortic pressure