Percutaneous Left Main Coronary Intervention: A Review of Plaque Modification in Left Main Percutaneous Coronary...

Area of Science:

• Interventional Cardiology
• Cardiovascular Disease

Background:

• Left main coronary artery (LMCA) stenosis is linked to significant morbidity and mortality.
• Treatment options include percutaneous coronary intervention (PCI) with drug-eluting stents (DES) and coronary bypass surgery.
• LMCA bifurcation lesions often present with high plaque burden and calcification, complicating stent delivery and expansion.

Purpose of the Study:

• To present a case utilizing plaque modification techniques for LMCA bifurcation stenosis.
• To review the evidence supporting plaque modification devices in unprotected left main PCI.

Main Methods:

• A case report of a calcified LMCA lesion (Medina class 1,1,1) treated with intravascular ultrasound (IVUS) and orbital atherectomy.
• Review of existing literature on plaque modification devices (rotational, orbital, laser atherectomy) in the context of LMCA PCI.

Main Results:

• Orbital atherectomy and IVUS facilitated optimal stent delivery and expansion in a complex calcified LMCA bifurcation lesion.
• Larger minimal stent area in LMCA bifurcation lesions is associated with improved outcomes in the DES era.

Conclusions:

• Plaque modification strategies are effective in reducing plaque volume and improving stent expansion in LMCA PCI.
• Orbital atherectomy is a valuable tool for managing calcified LMCA lesions, potentially improving procedural success and patient outcomes.