Most heart attacks and many strokes stem instead from less obtrusive plaques that rupture suddenly, triggering the emergence of a blood clot, or thrombus, that blocks blood flow.

• 反之，多数心脏病及中风是因一些并未造成明显阻塞的动脉斑突然破裂，引发凝血块的生成，才使得血管产生阻塞的。