Hemodynamic factors and atheromatic plaque rupture in the coronary arteries: from vulnerable plaque to vulnerable...

Area of Science:

• Cardiology
• Biomedical Engineering
• Pathophysiology

Background:

• Acute coronary syndromes (ACS) and sudden death are primarily caused by coronary plaque disruption and thrombosis.
• Coronary plaques are subjected to continuous mechanical and hemodynamic stress.
• This stress can precipitate plaque disruption, affecting both vulnerable and stable plaques.

Purpose of the Study:

• To review recent evidence on hemodynamic factors involved in coronary plaque disruption.
• To introduce and provide rationale for the concept of the vulnerable coronary segment in ACS research.

Main Methods:

• Literature review of studies investigating hemodynamic forces and coronary plaque instability.
• Synthesis of evidence linking mechanical stress to plaque rupture.
• Conceptual framework development for the vulnerable coronary segment.

Main Results:

• Hemodynamic forces, including shear stress and pressure fluctuations, are significant contributors to plaque vulnerability.
• Specific patterns of blood flow can identify 'vulnerable coronary segments' prone to disruption.
• Understanding these factors is crucial for predicting and preventing ACS events.

Conclusions:

• Hemodynamic factors play a critical role in the pathogenesis of acute coronary syndromes.
• The concept of the vulnerable coronary segment offers a new paradigm for studying ACS.
• Further research into biomechanics can improve risk stratification and treatment strategies for ACS.