Differences in coronary artery plaques between target and non-target vessels

Area of Science:

• Cardiovascular Imaging
• Interventional Cardiology
• Vascular Biology

Background:

• Coronary artery disease (CAD) is a leading cause of mortality worldwide.
• Understanding plaque characteristics in culprit versus non-culprit lesions is crucial for risk stratification and treatment.
• Intravascular imaging modalities like IVUS and VH provide detailed insights into plaque burden and composition.

Purpose of the Study:

• To compare plaque burden and composition between target coronary arteries with culprit lesions and non-target coronary arteries.
• To investigate the differences in plaque characteristics using intravascular ultrasound (IVUS) and virtual histology (VH).

Main Methods:

• Sixty patients undergoing coronary angiography (acute or elective) were enrolled.
• Target culprit lesions were identified angiographically.
• The first 4 cm of both target and a non-target coronary artery were analyzed using IVUS and VH.

Main Results:

• Target vessels exhibited significantly higher total plaque burden (52.4% vs. 45.9%, p < 0.001).
• The amount of necrotic core was significantly greater in target vessels (21.7% vs. 19.2%, p = 0.028).
• Non-target vessels had a greater amount of fibrolipidic material (12.7% vs. 10.6%, p = 0.035).

Conclusions:

• Patients with significant CAD have increased plaque burden and necrotic core in the culprit artery.
• Plaque composition shows strong correlation between target and non-target coronary arteries.
• These findings highlight specific plaque differences in diseased coronary segments.