Technology limitations of BRS in bifurcations

Area of Science:

• Cardiovascular Interventions
• Medical Device Technology

Background:

• Bifurcation stenting techniques are continuously refined, particularly with the advent of bioresorbable scaffolds (BRS).
• Optimal procedural success and long-term outcomes with BRS depend heavily on precise implantation techniques.

Purpose of the Study:

• To review and recommend best practices for bioresorbable scaffold implantation in coronary artery bifurcations.
• To adapt existing European Bifurcation Club (EBC) recommendations for the specific characteristics of BRS.

Main Methods:

• Review of current European Bifurcation Club (EBC) guidelines for bifurcation stenting.
• Analysis of BRS-specific considerations for scaffold sizing, deployment, and post-dilatation.
• Emphasis on vessel preparation and dual antiplatelet therapy.

Main Results:

• Proper vessel preparation and sizing are critical for optimal BRS expansion and function.
• BRS-specific modifications to EBC recommendations suggest sizing based on proximal main vessel diameter to prevent overexpansion and strut fracture.
• Post-dilatation is essential to correct malapposition and minimize flow disturbances, while respecting maximum expansion limits.

Conclusions:

• Careful attention to implantation techniques, including vessel preparation, sizing, and post-dilatation, is vital for successful BRS bifurcation stenting.
• Adapting EBC recommendations for BRS, particularly regarding scaffold sizing, can mitigate risks like malapposition and strut fracture.
• Dual antiplatelet therapy is crucial for preventing thromboembolic events in BRS bifurcation treatment.