Whether or not a 75-year-old can live for 20 years after having a stent put in depends on the patient’s physical condition, whether or not he or she has any other diseases and whether or not he or she takes proper care of himself or herself after the stent is put in. It is possible to live for another 20 years if the patient is in good health, has proper conditioning and has no other diseases. Patients with heart stents put in at the age of 75 can make the narrowed or blocked coronary blood vessels re-dilated and the blood flowing freely, effectively improving the symptoms of myocardial ischemia and lack of oxygen, so that the condition can be controlled. If anticoagulant drugs can be taken in strict compliance with medical advice, this condition will not affect life expectancy, and life expectancy can be extended at the same time. Of course, whether you can live 20 years after stenting depends on whether you have other diseases. For example, stroke, respiratory diseases, etc., will seriously affect life expectancy. If there are also diseases such as stroke, old chronic bronchitis, chronic obstructive pulmonary disease and so on troubled, it may lead to a shorter life expectancy. Therefore, in order to ensure a normal life expectancy, after the stent is put in place, it is necessary to strictly follow the doctor’s instructions to take medication and timely treatment of other related diseases in order to effectively extend life expectancy.