Evaluating cardiovascular pathophysiology and anatomy in atherosclerosis

Area of Science:

• Cardiovascular Medicine
• Pathophysiology
• Diagnostic Imaging

Background:

• Atherosclerosis initiates with endothelial dysfunction, characterized by reduced nitric oxide (NO) bioavailability.
• This dysfunction promotes the accumulation of oxidized low-density lipoprotein cholesterol, leading to arterial plaque formation.
• Plaque rupture can cause acute coronary events through thrombus formation and vessel occlusion.

Purpose of the Study:

• To outline the stages of atherosclerosis, from endothelial dysfunction to plaque rupture.
• To highlight emerging diagnostic techniques for early detection of endothelial dysfunction and plaque formation.
• To emphasize the potential of early diagnosis for risk stratification and preventative interventions.

Main Methods:

• Review of the pathophysiological process of atherosclerosis.
• Description of diagnostic modalities including flow-mediated dilation (FMD) of the brachial artery.
• Explanation of intravascular ultrasound (IVUS) for detecting early arterial plaque.

Main Results:

• Endothelial dysfunction is a key early step, decreasing NO and increasing oxidized LDL.
• Oxidized LDL accumulation in the subendothelial space forms atherosclerotic plaques.
• Advanced imaging can identify endothelial dysfunction and early plaque, enabling risk assessment.

Conclusions:

• Early identification of endothelial dysfunction and plaque formation is crucial for cardiovascular risk management.
• Diagnostic tools like FMD and IVUS offer promise in identifying at-risk patients.
• Timely initiation of therapies, such as lipid-lowering treatment, can potentially prevent adverse cardiovascular outcomes.