WHAT IS A DRUG-ELUTING STENT? | How long do stents last?
Drug-eluting stents are stents that contain drugs in their metal portions. These drugs control the proliferation of cells in the vessel wall where the stent contacts, preventing excessive tissue growth. This reduces the frequency of intra-stent stenosis. While varying depending on the patient's clinical condition and vascular structure, on average, intra-stent stenosis develops in 15 out of 100 people with non-drug-eluting stents and in 5 out of 100 people with drug-eluting stents. Conversely, in non-drug-eluting stents, 85 out of 100 people never develop problems, while in drug-eluting stents, 95 out of 100 people never develop problems. If stenosis does develop (5% probability), it almost always occurs within the first 12 months. After a successful stent procedure, the patient's regular medication use and adoption of a healthy lifestyle to control vascular disease ensure the stent functions without occluding for life. In short, stents do not have a fixed lifespan.
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