Abstract 16388: Prevalence and Clinical Outcomes of Stent Fracture and Stent Recoil After Drug-Eluting Stent Implantation at the Right Coronary Artery Ostial Site
Background: After stent implantation at the right coronary artery (RCA) ostial site, in-stent restenosis (ISR) often occurs and target lesion revascularization (TLR) is required. Stent fracture (SF) and stent recoil (SR) are sometimes found at sites after stent implantation, and they could be related to ISR and TLR. However, the impacts of SF and SR on clinical outcomes remain unclear.
Methods: From March 2004 to November 2010, 128 RCA ostial sites were successfully treated with 3 types of drug-eluting stent: sirolimus-eluting stent (SES), n=75; paclitaxel-eluting stent (PES), 37; everolimus-eluting stent (EES), 16. Midterm follow-up coronary angiography was performed at 8 months after implantation, and SF and SR were assessed. We defined SF as apparent strut separation and SR as axial recoil less than 80% in the stent diameter, both found by coronary angiography.
Results: We found 40 SF lesions (31.2%) and 24 SR lesions (18.7%). Data of ISR and TLR are shown in the table.
Conclusion: At the RCA ostial site, SF and SR have impacts on ISR and TLR. Moreover, the impact of SR is could be stronger than that of SF.
- © 2011 by American Heart Association, Inc.