定向冠脉内粥样斑块切除术是一项新的经皮冠脉腔内治疗方法,通过切除和清除腔内组织以治疗冠脉阻塞性病变。作者在382例患者中切除447个病变,操作成功的标准为管腔狭窄程度减少≥20%且残余狭窄<50%。89.5%的病变术后达到这个标准,狭窄程度从75.9±13.3%降至14.5±22.1%(P<0.001)。并发症包括,操作时冠脉闭塞2.4%;操作后冠脉闭塞1.3%;新的损伤0.5%;导引管引起的非阻塞性内膜夹层分离0.3%;穿孔0.8%;远端栓塞2.1%;Q 波型心梗0.8%以及非 Q 波型心梗4.2%。由于上 Directional coronary atherectomy is a novel percutaneous coronary intervention for the treatment of coronary occlusion by excision and removal of intraluminal tissue. The authors removed 447 lesions from 382 patients and the criteria for successful operation were ≥20% reduction in stenosis and <50% residual stenosis. 89.5% of the lesions achieved this standard postoperatively, and the stenosis decreased from 75.9 ± 13.3% to 14.5 ± 22.1% (P <0.001). Complications included coronary occlusion of 2.4% during operation, coronary occlusion of 1.3% after operation, and new injury of 0.5%; non-obstructive endocardial dissection caused by guiding catheter 0.3%; perforation 0.8%; distal embolization 2.1% ; Q wave myocardial infarction 0.8% and non-Q wave myocardial infarction 4.2%. Because of it