Why the study?
Patients with the same degree of coronary stenosis exhibit varying disease severity, prompting investigation into the role of plaque circumferential distribution.
Does the circumferential distribution of atherosclerotic plaques in the left coronary artery affect hemodynamics and plaque rupture risk in computational models?
Does the circumferential distribution of atherosclerotic plaques in the left coronary artery affect hemodynamics and plaque rupture risk in computational models?
Computational modeling suggests that the circumferential distribution of coronary plaques influences local hemodynamics (TAWSS and OSI), which may affect further plaque development.
Hypothesis-generating for plaque distribution in PCI risk assessment; prospective clinical studies needed before practice implications.
Atherosclerotic plaques within the coronary arteries can prevent blood from flowing to downstream tissues, causing coronary heart disease and a myocardial infarction over time. The degree of stenosis is an important reference point during percutaneous coronary intervention (PCI). However, clinically, patients with the same degree of stenosis exhibit different degrees of disease severity. To investigate the connection between this phenomenon and the plaque circumferential distribution, in this paper, four models with different plaque circumferential locations were made based on the CT data. The blood in the coronary arteries was simulated using the fluid–structure interaction method in ANSYS Workbench software. The results showed that the risk of plaque rupture was less affected by the circumferential distribution of plaque, and the distribution of blood in each branch was affected by the circumferential distribution of plaque. Low TAWSS areas were found posterior to the plaque, and the TAWSS < 0.4 Pa area was ranked from highest to lowest in each model species: plaque on the side away from the left circumflex branch, plaque on the side away from the heart; plaque on the side close to the heart; and plaque on the side close to the left circumflex branch. The same trend was also found in the OSI. It was concluded that the circumferential distribution of plaques affects their further development. This finding will be useful for clinical treatment.
No takes yet. Share an insight, caveat, or question.
Du et al. (2022) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: