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[Modeling of coronary arteries and cardiovascular risk factors]
M Gilard1, A Touiza, J M Larlet
1Département de cardiologie, hôpital de la Cavale blanche, CHU Brest.
Insights
Cardiovascular risk factors do not predict arterial modeling in atherosclerotic coronary arteries. Atherosclerotic lesions with negative modeling had smaller total surface area and plaque size compared to positive modeling.
Area of Science:
- Cardiovascular Medicine
- Interventional Cardiology
- Vascular Biology
Background:
- Atherosclerosis involves changes in coronary artery geometry.
- Arterial remodeling, termed positive or negative modeling, influences lesion progression.
Purpose of the Study:
- To investigate the impact of cardiovascular risk factors on coronary artery modeling.
- To compare arterial remodeling patterns in patients undergoing coronary angioplasty.
Main Methods:
- Endocoronary ultrasonography was used in 100 patients post-angioplasty.
- Arterial remodeling was classified as positive modeling (PM) or negative modeling (NM) based on total surface area (TSA).
Main Results:
- Positive modeling (PM) occurred in 53% of cases, negative modeling (NM) in 47%.
- Lesions with NM exhibited significantly smaller TSA and atheromatous plaque compared to PM lesions (p < 0.0001).
- Cardiovascular risk factors (hypercholesterolemia, smoking, hypertension) did not predict arterial modeling type or plaque appearance.
Conclusions:
- Arterial remodeling patterns (PM vs. NM) are distinct in atherosclerotic coronary arteries.
- Common cardiovascular risk factors are not associated with the observed arterial modeling patterns.
Abstract:
The aim of this study was to assess the impact of cardiovascular risk factors on the modelling of atherosclerotic coronary arteries. One hundred consecutive patients who underwent coronary angioplasty were studied by endocoronary ultrasonography at the site of dilatation. At the site of the treated stenosis of the dilated arteries there was either compensatory widening or positive modelling (PM), or focal contraction or negative modelling (NM) if the total surface area (TSA) of the artery at the site of dilatation was greater or smaller than the total surface area of the proximal or distal reference segments. PM was observed in 53 cases (53%) and NM in 47 cases (47%). Lesions with NM had smaller TSA (13.7 +/- 5.8 versus 20.8 +/- 6.4 mm2, p < 0.0001) and a smaller atheromatous plaque (11.8 +/- 5.6 versus 19.1 +/- 6.5 mm2, p < 0.0001) than lesions with PM. Cardiovascular risk factors such as hypercholesterolaemia, smoking and hypertension were not predictive of either form of arterial modelling and there was no relationship between the cardiovascular risk factors and the qualitative appearances of the plaque studied.