随着冠心病的加重，输送血液到心脏肌肉的动脉中的炎性栓子越来越多。
It consists of an inflammatory buildup of blockages in arteries to the heart muscle.
当栓子的数量超出心脏的承受能力后，就会引起气促或胸痛（心绞痛）等症状。
Blockages can become severe enough to cause symptoms such as shortness of breath or chest pain (angina).
当栓子完全阻塞血管后，该血管负责下的心脏肌肉就会失去氧气和营养的供应，从而受到伤害，甚至凋亡。
When blockages suddenly become complete, the portion of heart muscle fed by that blocked artery is now deprived of oxygen and nutrients, thus it is injured or now dies.
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