What are the chances of reblockage within a coronary stent?

The likelihood of reblockage after a stent is implanted depends on the type, size and placement of the stent.

Dr. Ravi H. Dave, MD
Cardiologist (Heart Specialist)

The chance of reblockage varies on a lot of factors such as the size of the artery, the location within the artery, the length of the blockage and the overall artery health. In general, the newer medicated stents re-block in less than 5 percent of cases and the non-medicated stents re-block in less than 30 percent of cases. The large majority of patients receive medicated stents.

Doctors hope that every coronary stent that they put in will last forever, and generally a lot of them do. Current technology includes a stent with drug coating on it, which helps to prevent reblockage within the stent while the artery is healing.

There have been very low reblockage issues with stent placement. Trials have shown that there is a reblockage rate of around 5 percent after two to five years. For certain stents, that rate seems to plateau off. For other stents, the rate still seems to climb every year; however, the latest generation of stents has lower reblockage rates.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.