Correlation between lipidic content and arterial-wall plaque burden: A Lipid Rich Plaque study sub-analysis

Area of Science:

• Cardiovascular Research
• Interventional Cardiology
• Biomarkers of Atherosclerosis

Background:

• Large plaque burden (PB) is a known risk factor for adverse coronary events.
• The Lipid-Rich Plaque (LRP) study investigated the relationship between lipidic content and arterial PB.

Purpose of the Study:

• To assess the correlation between lipidic content and arterial plaque burden.
• To evaluate the association of these factors with non-culprit major adverse cardiac events (NC-MACE).

Main Methods:

• Analysis of 1269 patients and 5743 coronary segments from the LRP study.
• Evaluation of Lipid Core Burden Index (maxLCBI_4mm) and plaque burden (PB).
• Assessment of NC-MACE over 2 years using hazard ratios (HR).

Main Results:

• The highest NC-MACE risk was observed in segments with maxLCBI_4mm > 400 and PB > 40% (HR, 3.78).
• Segments with high lipid content but no measurable PB were also associated with 2-year events.
• Lower event rates were seen in segments with maxLCBI_4mm ≤ 400 and PB ≤ 40% (HR 0.25).

Conclusions:

• NC-MACE risk increases with escalating lipidic content and plaque burden.
• Coronary segments with high lipid content, even without significant PB, pose a risk.
• Comprehensive assessment of both lipid content and PB is crucial for risk stratification.