Definitions and classifications of bifurcation lesions and treatment

Area of Science:

• Interventional Cardiology
• Medical Imaging
• Vascular Biology

Background:

• Coronary artery disease often involves complex bifurcation lesions.
• Standardized terminology is crucial for effective communication and treatment planning.
• Existing classifications may not fully capture lesion complexity or treatment nuances.

Purpose of the Study:

• Introduce new terminology for coronary bifurcation lesions.
• Simplify lesion identification, description, localization, and measurement.
• Facilitate the selection of appropriate treatment strategies.

Main Methods:

• Proposal of the Medina classification for research and clinical exchange.
• Integration of clear side branch definitions.
• Utilization of dedicated angiography, 3D angiography, and multislice computed tomography for angle measurements.
• Introduction of the MADS (Main, Across, Distal, Side) classification based on stent placement and order.

Main Results:

• The Medina classification offers a simplified approach for research.
• The MADS classification considers final stent position and implantation order.
• Advanced imaging modalities are essential for accurate bifurcation angle measurement.
• Current classifications may not encompass all procedural maneuvers.

Conclusions:

• The proposed terminology and classifications aim to standardize coronary bifurcation lesion management.
• Accurate lesion assessment and treatment selection are improved by new classification systems.
• Further refinement may be needed to incorporate detailed procedural aspects.