Fate of side branch after stenting with cross-over technique in coronary bifurcation lesions——an IVUS and QCA comparison study
- VernacularTitle:冠状动脉分叉病变支架跨越分支技术对分支血管的影响及机制——血管内超声和冠状动脉造影对照研究
- Author:
Li LI
;
Luyue GAI
;
Tingshu YANG
- Publication Type:Journal Article
- Keywords:
Coronary disease;
Coronary vessels;
Stents;
Ultrasonography,interventional
- From:
Chinese Journal of Interventional Cardiology
1993;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyze the effect on side branch with diameter ≥2.0 mm after stenting with cross-over technique in non-left main coronary bifurcation by using IVUS and QCA.Methods Comparative analysis was made on the IVUS and QCA results of the side branches in 35 non-left main bifurcation lesions which were intervened by cross-over technique.Results The diameter and area stenosis rates of the side branches examined by IVUS compared with QCA before intervention were 18.67%?16.29% vs 29.06%?23.16% and 31.17%?25.54% vs 42.22%?31.81% respectively.After cross-over interventional therapy,acute occlusion of the side branches detected by both IVUS and QCA was 2.86%.The rates of aggravated stenosis and newly developed stenosis in the side branches shown by IVUS and QCA were 14.29% vs 48.57%(P=0.012) and 11.43% vs 14.29%(P=0.294).Post-intervention morphology of the side branches detected by IVUS included plaque shift,vessel wall shrink,spasm and deformation.By using logistic analyzing,existence of soft plaque in the main branches was an independant factor affecting the fate of the side branches.Conclusion Comparing with IVUS results,QCA may over-estimate the degree of stenosis of the side branches after cross-over technique.The possible mechanism of side branch complications shown by IVUS included plaque shift,vessel wall shrink,spasm and deformation.Soft plaque in the main branch is an independant influencing factor of the result in the side branches.
