Application intravascular ultrasound the classification of coronary bifurcation lesions
- VernacularTitle:血管内超声在冠状动脉分叉病变分型中应用的探讨
- Author:
Li LI
;
Luyue GAI
;
Tingshu YANG
- Publication Type:Journal Article
- Keywords:
Ultrasonography,interventional;
Coronary disease;
Diagnostic techniques,cardiovascular
- From:
Chinese Journal of Interventional Cardiology
1993;0(03):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To verify the application of intravascular ultrasound(IVUS)in the classification of coronary bifurcation lesions.Methods There were 62 coronary bifurcations verified by CAG.Additional to conventional CAG,all patients received IVUS exam.Observation and determination of the plaque position in the main vessel(MV)and the side branches(SB)was made as well as the plaque morphological characters in these bifurcations.Results A 93.55% of the MV and 98.39% of the SB plaque at the bifurcation were eccentric and 77.42% of the plaques located at the external side of the vessel wall of both the MV and SB.There were 6 types(Type A,B,C,D,E,F)of bifurcations elassified by IVUS in this study.Type A(90.32%)was eccentric plaque in the MV which located at the opposite site of SB with the plaque in SB located at the opposite site of carina.Type B(1.61%)was concentric plaque found only in MVwith no plaque in the SB.Type C(1.61%)was concentric plaque in MV with eccentric plaque in SB which sited at the opposite of the carina.Type D(3.23%)was concentric plaque in MV which involved both of the ostium and the carina of SB.Type E(1.61%)was eccentric plaque in MV which located at the opposite side of SB which has concentric plaque at ostium.Type F(1.61%)was eccentric plaque in MV located at its the internal wall and involved carina of MV.A total of 6.45% of the all the lesions involved carina of the bifurcation.Conclusion Classification of coronary bifurcation based on IVUS was different from conventional CAG classification.The main IVUS classification criteria include ubtact carina,eccentricity and distribution of plaque on the external side of the vessel wall.
