Predictors of side branch occlusions just after coronary stenting.
- Author:
Young Uk SEO
1
;
Young Youp KOH
;
Min Jung KANG
;
Kyoung Sig CHANG
;
Soon Pyo HONG
Author Information
1. Department of Internal Medicine, College of Medicine, Chosun University, Gwang Ju, Korea. yykoh@mail.chosun.ac.kr
- Publication Type:Original Article
- Keywords:
Coronary stenosis;
Stent
- MeSH:
Angioplasty, Balloon, Coronary;
Constriction, Pathologic;
Coronary Artery Disease;
Coronary Stenosis;
Hand;
Humans;
Incidence;
Myocardial Infarction;
Stents*
- From:Korean Journal of Medicine
2004;67(2):153-160
- CountryRepublic of Korea
- Language:Korean
-
Abstract:
BACKGROUND: Coronary stenting is one of effective and well-accepted treatments for coronary artery disease. On the other hand, side branch occlusion (SBO) is a known complication of percutaneous transluminal coronary angioplasty (PTCA) and coronary stenting. Accordingly, this study was designed to determine the incidence, predictors and acute clinical outcomes of SBO. METHODS: Coronary angiographic findings of 45 patients who had total 98 side branches originating from the stented segments were analized before and just after coronary stenting. Bifurcation lesions were divided into 3 types : type 1, type 2, type 3 and each type was subdivided into type A with significant ostial narrowing (diameter stenosis >or=50%) and type B without significant ostial narrowing of side branches. Side branch occlusion was defined as development of total occlusion or morphologic changes from type B to type A or reduction of TIMI flow more than grade 1 compared with pre-stenting flow of side branches. RESULTS: After coronary stenting, SBO occurred in 20 of 98 side branches (20.4%). SBO was significantly related with history of previous myocardial infarction (p=0.02), threatened side branch morphology (p=0.016) and poor pre-stenting flow of side branches (p=0.014). There were no serious clinical events such as myocardial infaction and death associated with acute SBO. CONCLUSION: Acute SBO can be developed in a few stented patients. Signifiant clinical and angiographic predictors of SBO just after coronary stenting were the history of previous myocardial infarction, threatened side branch morphology and poor pre-stenting flow of side branches.
