It is impossible to assess how long you can live at 45 years of age with stenting, and this cannot be generalized. If you take your medication regularly and have regular medical checkups after stenting, then it is possible that your life expectancy will not be affected. If after stenting, there is no regular use of medication, or no good lifestyle habits, or there is coronary heart disease combined with heart failure or malignant arrhythmia, then life expectancy may be shortened. If the stent is put in 45 years old, if it is a coronary stent, then the regular use of postoperative aspirin enteric-coated tablets, clopidogrel and other anti-platelet aggregation drugs, simvastatin and other lipid regulating and stabilizing plaque drugs, etc., to prevent post-stent thrombosis or vascular re-stenosis, and at the same time, regular physical examination, and good living habits, then there is no impact on the life expectancy. After stenting at age 45, if there is no regular medication, then post-stent thrombosis may occur, blocking blood vessels, leading to recurrence of the disease, which may be life-threatening at any time. Or there may be coronary heart disease comorbidities, such as heart failure, malignant arrhythmia and other conditions, then it will shorten the life expectancy. But it is impossible to assess exactly how long the patient will live. In conclusion, after stenting at the age of 45, it is important to follow the medication prescribed by the doctor and go to the hospital regularly for follow-up.