Cardiac stenting, known as coronary stenting, is a common treatment for myocardial infarction in which a balloon catheter is inserted into the narrowed coronary artery through a puncture in the radial or femoral artery to restore the diseased vessel to a smooth flow, in order to maintain the blood supply to the heart muscle. Stenting is a relatively mature technology, but either procedure faces certain risks, such as acute coronary artery occlusion, in-stent thrombosis, coronary artery rupture, in-stent restenosis, stent fracture or off-loading, and so on. 1. Acute coronary occlusion: may originate from thrombus or plaque within the vessel. 2. In-stent thrombosis: may form a secondary blockage of a coronary artery. 3. Coronary artery dissection, in-stent restenosis, stent fracture or off-loading: with the increasing sophistication of stenting techniques, the probability of these occurrences is relatively small and there is no need for undue concern. After a myocardial infarction occurs, it is important to seek medical attention in a timely manner and follow your doctor’s advice and arrangements.