Which restenosis rate is typical for drug-eluting stents?

• A. Greater than 50%
• B. Less than 8%
• C. Less than 20%
• D. Less than 2%

Answer: (B)

Drug-eluting stents reduce restenosis by releasing antiproliferative drugs that limit neointimal hyperplasia, the main driver of restenosis after stent placement. This keeps restenosis rates in the single digits, typically under 8% in many trials and real-world data. Bare-metal stents, by contrast, had much higher rates, around the teens to twenties or more, depending on lesion complexity.

So the best match is a restenosis rate under 8%—a single-digit figure. Rates greater than 50% are not seen with DES, and while very low rates (like under 2%) can occur in select cases, they’re not the typical result across broad practice.