How long it takes for the symptoms of suffocation to disappear after coronary artery drug balloon dilatation is related to the cause of the disease, the severity of the disease, and the timeliness or otherwise of the visit to the doctor, and cannot be generalized. Coronary artery balloon dilatation is used to dilate narrowed coronary arteries, and is used for constriction symptoms caused by coronary artery spasm, restenosis after coronary stenting, and other factors. The measure is not effective for other causes of constriction. If the stuffiness is caused by coronary artery stenosis or restenosis after coronary stenting, and the condition is detected in time, and coronary artery medication balloon dilatation is taken early, then the stuffiness will disappear immediately. However, if the condition is severe and a large myocardial infarction has occurred, then even if the measure is taken, it is useless. If the symptoms are not caused by coronary stenosis or other factors, but by heart failure or bronchial asthma, then coronary artery drug balloon dilatation may be ineffective or even ineffective, and the symptoms will not disappear. For heart failure, furosemide and other diuretics to reduce the burden on the heart, nitroglycerin and other drugs to expand the coronary artery, cediran and other cardiotonic agents to have an effect, simply take the coronary artery medication balloon dilatation, can not solve the overall situation. The suffocation caused by bronchial asthma, need aminophylline and other bronchodilating drugs, or albuterol aerosol and other drugs to relieve bronchospasm, in order to make the suffocation symptoms disappeared, and the drug balloon dilatation, can not solve the problem, the suffocation symptoms will not disappear. Coronary artery drug dilatation after how long suffocation symptoms disappear does not have a specific time, should be under the guidance of the doctor for standardized treatment to reduce symptoms.