Coronary heart disease coronary artery stenosis 90% without stenting generally refers to coronary heart disease blood vessel blockage 90% without stenting, in general, it does not work. Coronary artery stenosis will cause insufficient blood supply to the heart, resulting in chest tightness, chest pain, arrhythmia and other symptoms of myocardial ischemia, and the degree of stenosis reached 90% that is more dangerous, if not stenting, it is very easy to myocardial infarction and thus lead to life-threatening, so this situation is recommended to carry out stenting. After stenting, you need to take aspirin, atorvastatin, clopidogrel and other medications regularly. If you have hypertension, diabetes and other related diseases that cause coronary heart disease, you need to be actively treated, and the specific medication is recommended to be used under the guidance of a specialist, with regular follow-up. The specific use of drugs need to follow the doctor’s instructions. Patients usually need to pay attention to closely monitor the changes in blood pressure, try to maintain emotional stability, dietary not to eat high fat food. Suffering from coronary heart disease with coronary artery stenosis 90% should go to the hospital in a timely manner, under the guidance of the doctor active treatment, so as not to delay the condition.