Quantification of coronary artery calcification in patients with FH using EBCT

Area of Science:

• Cardiovascular Medicine
• Atherosclerosis Research
• Genetics and Lipid Metabolism

Background:

• Coronary vessel wall calcification indicates advanced coronary atherosclerosis.
• Familial hypercholesterolemia (FH) is a genetic disorder leading to high LDL-cholesterol.
• The link between FH and accelerated coronary calcification requires further investigation.

Purpose of the Study:

• To determine if patients with heterozygous familial hypercholesterolemia (FH) exhibit increased coronary artery calcification.
• To compare coronary calcification levels in FH patients, hypercholesterolemic patients, and controls.
• To investigate the correlation between LDL-cholesterol levels and coronary calcification.

Main Methods:

• Utilized electronic beam computed tomography (CT) to quantify coronary artery calcium.
• Evaluated total coronary calcium score (Agatston-Score), number of calcified lesions, and calcified plaque volume.
• Compared three groups: LDL-apheresis treated FH patients with CAD, moderate hypercholesterolemia patients with CAD, and asymptomatic controls.

Main Results:

• FH patients with coronary artery disease (CAD) had significantly higher coronary calcium scores, lesion numbers, and plaque volumes than CAD patients without FH.
• Despite being younger, FH patients displayed more extensive calcification.
• A strong positive correlation was found between LDL-cholesterol levels and total coronary calcium score across all groups.

Conclusions:

• Coronary artery calcification is more pronounced in FH patients with CAD compared to those with moderate hypercholesterolemia.
• Elevated LDL-cholesterol levels over time contribute significantly to coronary calcification in FH.
• Early diagnosis and cholesterol-lowering treatment are vital for managing atherosclerosis in FH patients.