Unlike both stable and unstable angina, in this case the coronary artery's constricted so severely that all layers of the heart wall being supplied are affected, therefore it's referred to as transmural ischemia.

与稳定型、非稳定型不同，这种情况下冠状动脉极度收缩，心壁所有层都受影响，因此，也被称为透壁性缺血。