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不稳定型心绞痛经內科系统治疗2～3周仍不能缓解者,可采用介入性治疗。近年来,应用于临床的介入性治疗有经皮冠状动脉腔内成形术(PTCA)、冠脉激光成形术(CLA)、冠脉内斑块旋切术等。一、PTCA 本术通过球囊的机械性挤压作用,使粥样硬化斑块压缩、挤碎,冠脉内膜和中层撕裂,冠脉管壁组织伸展延长,血管腔扩大,血流恢复,从而改善心肌缺血。从尸解病例发现,血管控扩大是由于斑块破裂,而不是压缩所致。动物实(?)
Unstable angina pectoris by medical system 2 to 3 weeks can not be relieved, can be used interventional therapy. In recent years, the clinical interventional treatment with percutaneous transluminal coronary angioplasty (PTCA), coronary artery angioplasty (CLA), coronary angioplasty and so on. First, PTCA this surgery through the mechanical compression of the balloon, so that atherosclerotic plaque compression, crushing, coronary intima and middle tear, coronary artery wall extension, blood vessel expansion, blood flow recovery , Thereby improving myocardial ischemia. From the autopsy cases found that the expansion of vascular control is due to plaque rupture, rather than compression. Animal Real (?)