Complex coronary interventions: unprotected left main and bifurcation lesions.

Area of Science:

• Interventional Cardiology
• Cardiovascular Medicine
• Medical Device Technology

Background:

• Percutaneous coronary intervention (PCI) has advanced significantly with stent and drug-eluting stent (DES) technologies.
• Unprotected left main (ULM) and bifurcation lesions remain complex and controversial challenges in PCI.
• DES have demonstrated efficacy in reducing restenosis, becoming a primary treatment for bifurcation lesions.

Purpose of the Study:

• To provide a contemporary review of PCI strategies for ULM and bifurcation lesions.
• To describe the merits of current PCI approaches for these complex coronary subsets.
• To offer insights into future directions for PCI in treating challenging coronary lesions.

Main Methods:

• Review of current literature and clinical studies on PCI for ULM and bifurcation lesions.
• Analysis of one- vs. two-stent strategies for bifurcation lesions based on disease complexity.
• Evaluation of DES performance in complex coronary interventions.

Main Results:

• PCI is increasingly feasible for select ULM stenosis cases, traditionally a surgical indication.
• DES are the mainstay for bifurcation lesions, with strategy choice dependent on lesion characteristics.
• DES significantly reduce restenosis rates in complex coronary interventions.

Conclusions:

• PCI, particularly with DES, offers viable and effective treatment options for ULM and bifurcation lesions.
• Current strategies for bifurcation PCI involve careful consideration of stent number and lesion complexity.
• Ongoing advancements in PCI technologies promise further improvements for complex coronary artery disease management.