摘要左冠状动脉主干(1eft main coronary artery,LMCA)狭窄因其血管支配的特殊性,可使左心室大片心肌处于缺血状态出现持续性心绞痛,并容易引发大面积的心肌梗死而致患者猝死,预后较差。冠状动脉主干狭窄大多伴有外周冠状动脉的病变,发病率约占同期所有冠状动脉造影患者的0.7%~12.6%。
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