After the stent to stay out of breath to carry out electrocardiogram examination, if necessary, review coronary angiography, and drug-related to pay attention to follow the doctor’s instructions to adjust the drug. 1. After stenting, there is a possibility of restenosis within the stent, and it is necessary to review the electrocardiogram in a timely manner, and if necessary, review the coronary angiography to understand the situation within the stent. Patients can be given medications to expand the coronary arteries, such as isosorbide nitrate and nicorandil. 2. Some patients are not getting air after stenting, which may be related to medication. After stenting, patients need to take oral antiplatelet medication, and some patients need to take Tegretol, which has the adverse reaction of tracheospasm, which may lead to the symptom of not getting air, and if the symptom is obvious, the Tegretol can be replaced by clopidogrel. Staying out of breath after stenting, we should go to the hospital in time, to clarify the specific diagnosis, and give treatment under the guidance of the physician.