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Published on: September 22, 2020
Optimal Revascularization Strategy on Medina 0,1,0 Left Main Bifurcation Lesions in Type 2 Diabetes
Xuwei Zheng1, Hongyu Peng1, Donghui Zhao1
1Department of Cardiology, Beijing Anzhen Hospital, Beijing Institute of Heart, Lung and Blood Vessel Diseases, Capital Medical University, Beijing 100029, China.
Insights
Crossover stenting without final kissing balloon angioplasty shows superior hemodynamic results for Medina 0,1,0 left main bifurcation lesions. This technique may reduce risks of restenosis and thrombosis in complex coronary artery disease patients.
Area of Science:
- Cardiovascular Medicine
- Biomedical Engineering
- Interventional Cardiology
Background:
- Diabetes mellitus (DM) significantly increases cardiovascular disease (CVD) risk, comparable to coronary artery disease (CAD) diagnosis.
- Optimal revascularization and medical therapy are crucial for patients with complex CAD.
- Left main bifurcation lesions require careful consideration for stenting strategies.
Purpose of the Study:
- To compare hemodynamic outcomes of various stenting techniques for Medina 0,1,0 left main bifurcation lesions.
- To evaluate the impact of stenting on hemodynamic parameters influencing restenosis and thrombosis.
- To identify optimal stenting strategies for left main bifurcation lesions.
Main Methods:
- Utilized idealized left main bifurcation models.
- Employed computational fluid dynamics (CFD) analysis to assess hemodynamic parameters.
- Quantified surface integrals of time-averaged wall shear stress (TAWSS) and oscillatory shear index (OSI).
Main Results:
- Crossover stenting without final kissing balloon angioplasty yielded the most favorable hemodynamic results.
- This technique demonstrated integrated TAWSS of 2.96 × 10-4 N and OSI of 4.75 × 10-6 m2.
- A significant reduction in areas with high OSI (>0.25, >0.35, >0.45) was observed.
Conclusions:
- Crossover stenting without final kissing balloon angioplasty offers hemodynamic advantages for Medina 0,1,0 left main bifurcation lesions.
- Larger bifurcation angles are associated with unfavorable hemodynamic flow profiles.
- This finding has implications for optimizing stenting strategies in complex CAD.
Abstract:
Aim. Diabetes mellitus (DM) is a major risk factor for cardiovascular disease. The implications of a diagnosis of DM are as severe as the diagnosis of coronary artery disease. For many patients with complex coronary artery disease, optimal revascularization strategy selection and optimal medical therapy are equally important. In this study, we compared the hemodynamic results of different stenting techniques for Medina 0,1,0 left main bifurcation lesions. Methods. We use idealized left main bifurcation models and computational fluid dynamics analysis to evaluate hemodynamic parameters which are known to affect the risk of restenosis and thrombosis at stented bifurcation. The surface integrals of time-averaged wall shear stress (TAWSS) and oscillatory shear index (OSI) at bifurcation site were quantified. Results. Crossover stenting without final kissing balloon angioplasty provided the most favorable hemodynamic results (integrated values of TAWSS = 2.96 × 10-4 N, OSI = 4.75 × 10-6 m2) with bifurcation area subjected to OSI values >0.25, >0.35, and >0.45 calculated as 0.39 mm2, 0.06 mm2, and 0 mm2, respectively. Conclusion. Crossover stenting only offers hemodynamic advantages over other stenting techniques for Medina 0,1,0 left main bifurcation lesions and large bifurcation angle is associated with unfavorable flow profiles.
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