When are both the drug and polymer from the Synchrony Bioabsorbable Polymer stent fully dissipated?

• A. Drug at 30 days, Polymer at 2 months
• B. Drug at 90 days, Polymer at 4 months
• C. Drug at 6 weeks, Polymer at 3 months
• D. Drug at 120 days, Polymer at 5 months

Answer: (B)

The correct response indicates that the drug is fully dissipated at 90 days, while the polymer is completely absorbed within 4 months. This timeframe is based on clinical research and the pharmacokinetics of the components used in the Synchrony Bioabsorbable Polymer stent.

The drug eluted from the stent, which is designed to prevent in-stent restenosis, follows a specific release profile where it is primarily released over the initial 90 days, ensuring that local tissue receives the optimal amount of the therapeutic agent to reduce neointimal hyperplasia during this critical period. The designation of 90 days specifically aligns with the established understanding of how drug elution works in bioabsorbable stents.

The polymer, which serves as a coating for the drug and helps maintain the stent's structural integrity initially, is engineered to degrade over a longer period—around 4 months. This gradual breakdown allows the stent to provide support to the vessel while eventually becoming completely absorbed by the body without leaving any permanent foreign material behind.

This understanding of the timing of drug and polymer absorption is crucial for both the efficacy of the stent in preventing restenosis and ensuring patient safety. The synchrony of the drug's release and polymer degradation is