<unk>  (with its symptoms termed<unk>  syndrome or cardiac<unk>  syndrome) is a phenomenon where an alteration of circulation patterns leads to a reduction in the blood flow directed to the<unk>  circulation. It is caused when there is narrowing of the<unk>  arteries and a<unk>  vasodilator is used –<unk> ing" blood away from those parts of the heart. This happens as a result of the narrowed<unk>  arteries being always maximally dilated to compensate for the decreased upstream blood supply. Thus, dilating the resistance vessels in the<unk>  circulation causes blood to be shunted away from the<unk>  vessels supplying the ischemic zones, creating more ischemia.
Coronary steal
Coronary occlusion
Myocardial stunning
Hibernating myocardium
Anemic infarct
Warfarin necrosis
Coronary thrombosis
Coronary vasospasm