心肌桥是一种先天性血管畸形。冠状动脉及其分支通常行走于心脏表面的心外膜下脂肪中或心外膜深面，当一段冠脉被心肌所包绕，该段心肌称为心肌桥，该段冠脉称为壁冠状动脉。心肌桥可能与冠心病的发病局部因素有关，也可能引起心肌缺血。心脏收缩时被心肌桥覆盖的这段冠状动脉受到压迫，出现收缩期狭窄，而心脏舒张时冠状动脉压迫被解除，冠状动脉狭窄也被解除。...
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