Which factor does NOT contribute to a stent's deliverability?

• A. Metal composition
• B. Strut thickness
• C. Profile
• D. Flexibility

Answer: (A)

The deliverability of a stent is influenced by various physical characteristics that affect how easily the stent can be navigated through the vascular system during implantation. Metal composition does play a role in the stent’s strength and corrosion resistance but is not a primary factor impacting its deliverability.

Strut thickness is critical to deliverability because thinner struts can help reduce friction and allow the stent to pass through tighter anatomical structures more easily. A lower profile, which refers to how streamlined the stent is when compressed, directly influences how well it can be delivered through blood vessels. Similarly, flexibility can impact how well the stent can conform to the curvature of the vessels during insertion.

In contrast, while metal composition contributes to the overall properties of a stent, it does not specifically enhance or inhibit its ability to be delivered through the circulatory system. Therefore, it is not considered a vital component when assessing stent deliverability.