How often do you have to have a heart stent replaced?

That would be variant upon what kind of stent was placed in his heart. However, the good news is most stents last forever because they are made of a special metal material. But there are some stents on the market that dissovle after being in the artery after 3 years. If sounds like his may be permanent, but they best way to find out is to talk to the cardiologist to find out which he has and how often it needs to be repalced. Hope this helps!