What major clinical benefit is associated with using a single stent versus overlapping stents?

• A. Increased fracture risk; Decreased 3 year MACE;
• B. Increased restenosis; Increased side branch jailing;

Answer: (B)

The use of a single stent in percutaneous coronary interventions offers significant advantages compared to overlapping stents, particularly in regard to the reduction of complications and improved clinical outcomes.

One key benefit is that employing a single stent typically results in a lower risk of restenosis. Restenosis refers to the re-narrowing of the artery after stenting, a common complication that can occur when there is not enough coverage or when there is overly aggressive stenting. Overlapping stents can lead to an area of the artery that is not optimally treated, potentially causing excessive scar tissue formation and stent malapposition, which can increase the chance of restenosis.

Additionally, single stent deployment avoids the problem of side branch jailing, which can occur when overlapping stents obscure or compromise side branches of the coronary artery. Jailing can lead to difficulty in accessing these branches for future interventions or even acutely during the procedure, potentially impeding blood flow to important heart muscle areas supplied by those branches.

Choosing a single stent reduces these complications, supporting a more straightforward and effective treatment approach, which may also reflect in better long-term outcomes, such as decreased rates of major adverse cardiovascular events (MACE). Thus, the proper use of a single