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Updated: Jun 26, 2025
Optical Coherence Tomography Based Biomechanical Fluid-Structure Interaction Analysis of Coronary Atherosclerosis Progression
Published on: January 15, 2022
Tandem lesions associate with angiographic progression of coronary artery stenoses
Kyle B Franke1, Nicholas J Montarello2,3, Adam J Nelson1,2,3
1Adelaide Medical School, The University of Adelaide, Adelaide, Australia.
Insights
Coronary artery stenosis progression is linked to downstream lesions. Identifying these angiographic predictors aids in understanding disease advancement and patient outcomes.
Area of Science:
- Cardiology
- Interventional Cardiology
- Medical Imaging
Background:
- Clinical factors of coronary artery disease (CAD) progression are well-established.
- Angiographic predictors of CAD progression remain less defined.
- This study investigates angiographic factors influencing coronary stenosis progression.
Purpose of the Study:
- To identify clinical and angiographic predictors of coronary artery stenosis progression.
- To analyze factors associated with increased stenosis severity over time.
- To enhance understanding of CAD progression dynamics.
Main Methods:
- Retrospective analysis of 199 patients with serial coronary angiograms (interval > 6 months).
- Quantitative Coronary Angiography (QCA) used to analyze lesion segments (stenosis ≥ 20%).
- Mixed-effects regression models evaluated factors associated with stenosis progression (defined as ≥ 10% increase).
Main Results:
- 54.3% of patients and 21.1% of lesions showed progression.
- Patient-level predictors included age, number of lesions, and multivessel disease.
- Lesion-level predictors: downstream stenosis (OR 3.07) and circumflex artery location (OR 1.81) were significant.
Conclusions:
- Coronary lesions with downstream stenoses are at increased risk of progression.
- Further research is needed on the mechanistic basis and clinical implications.
- Findings may inform strategies for plaque vulnerability and outcome prediction.
Background:
Although the clinical factors associated with progression of coronary artery disease have been well studied, the angiographic predictors are less defined.
Objectives:
Our objective was to study the clinical and angiographic factors that associate with progression of coronary artery stenoses.
Methods:
We conducted a retrospective analysis of consecutive patients undergoing multiple, clinically indicated invasive coronary angiograms with an interval greater than 6 months, between January 2013 and December 2016. Lesion segments were analysed using Quantitative Coronary Angiography (QCA) if a stenosis ≥ 20 % was identified on either angiogram. Stenosis progression was defined as an increase ≥ 10 % in stenosis severity, with progressor groups analysed on both patient and lesion levels. Mixed-effects regression analyses were performed to evaluate factors associated with progression of individual stenoses.
Results:
199 patients were included with 881 lesions analysed. 108 (54.3 %) patients and 186 (21.1 %) stenoses were classified as progressors. The median age was 65 years (IQR 56-73) and the median interval between angiograms was 2.1 years (IQR 1.2-3.0). On a patient level, age, number of lesions and presence of multivessel disease at baseline were each associated with progressor status. On a lesion level, presence of a stenosis downstream (OR 3.07, 95 % CI 2.04-4.63, p < 0.001) and circumflex artery stenosis location (OR 1.81, 95 % CI 1.21-2.7, p = 0.004) were associated with progressor status. Other lesion characteristics did not significantly impact progressor status or change in stenosis severity.
Conclusion:
Coronary lesions which have a downstream stenosis may be at increased risk of stenosis progression. Further research into the mechanistic basis of this finding is required, along with its implications for plaque vulnerability and clinical outcomes.
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