Hello Welcome to HCM Angioplasty or stent implantation is a very reliable treatment for heart blockages. Now a days with the drug eluting stent the chances of stent narrowing again or not being accepted by the body has decreased significantly. The cypher stent is a drug eluting stent. Drug eluting stents usually remain patent for 10-12 years. With regular check ups with ECG, 2 d echo and stress test any possible complications can be diagnosed and avoided. Also a lot depends on the pumping function of the heart. If the person has sustained a heart attack earlier and the heart pumping function (LVEF) had decreased, then the life expectancy goes downm But this is due to the damage caused by the attack and not because of the stent placement. People with decreased pumping function and with stents also do well if proper precautions are taken and medications are taken regularly. In my practice I have seen people with stents doing well even after 40 years requiring no additional procedures except routine tests and check angiographies every 10 years. So please stop worrying about the life expectancy. It is quite good. One of the indications of putting in a stent is to improve the quality of life and expectancy. She should be compliant on her medications and regular brisk walking or cycling with diet restrictions. A health check up should be done every one year with ECG, 2d echo and a stress test. Wishing her good health Regards.