Abstract 12719: Prevalence and Clinical Implications of Peri-Stent Contrast Staining, Stent Thrombosis and Stent Fracture After Drug-Eluting Stent Implantation in Bifurcation Lesions
Objectives Recently it has been reported that stent fracture (SF) might be related to peristent contrast staining (PSS) and stent thrombosis (ST). We evaluated the prevalence of PSS, ST in SF sites at 8-month follow-up angiography and compare the outcomes of single- versus two-stent techniques in patients with bifurcation disease treated with drug-eluting stents (DES).
Methods Between November 2002 and December 2009, 2630 bifurcation lesions were treated with single or two DESs. Of these, 2107 lesions treated with single stenting, and 523 lesions treated with two stenting. Those were followed by angiography at 8 months after DES implantation. The lesions were divided into two groups respectively:one with SF (SF[+]) and the other without SF (SF[-]). We evaluated the angiographical findings including PSS and ST between the two groups. PSS was defined as contrast staining outside the stent contour extending to >20% of the stent diameter measured by quantitative coronary angiography. ST was defined according to the Academic Research Consortium guidelines.
Results See table. Compared with the SF(-) groups, in the SF(+) groups more frequently PSS and ST were occurred in bifurcation lesions with two-stent techniques.
Conclusions These rare angiographical findings were observed at the same site each other, so in bifurcation lesions treated with DES, SF itself or mechanical stress of causative SF may be related to PSS and ST.
- © 2011 by American Heart Association, Inc.