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本文研究目的在于观察多次延长球囊扩张时间能否进一步减轻冠脉阻塞过程中心肌缺血表现,评估早期增进代偿性侧枝循环在心肌缺血适应过程中的作用。对象选择条件:(1)左冠脉前降枝孤立性狭窄;(2)无心肌梗塞病史;(3)左室EF正常;(4)病变血管相关心肌无或仅轻微运动障碍。符合上述条件的17例作为观察对象。其中男14例,女3例,平均年龄58±8(44～75)岁。方法 PTCA中5次延长球囊充盈时
The purpose of this study is to observe whether prolonged balloon dilation can further reduce myocardial ischemia during coronary occlusion and to evaluate the role of early compensatory collateral circulation in myocardial ischemic adaptation. Subject selection criteria: (1) left anterior descending coronary artery stenosis; (2) no history of myocardial infarction; (3) normal left ventricular EF; (4) vascular lesions or only mild dyskinesia. 17 cases that meet the above conditions as the observation object. There were 14 males and 3 females with an average age of 58 ± 8 (44-75 years). Methods Five times to extend balloon filling in PTCA