Abstract 12749: Impact of Intrastent Yellow Plaque Observed by Coronary Angioscopy at Late Phase After Drug-Eluting Stents Implantation in Clinical Outcome

Background: Previous study showed that number of yellow plaque in a coronary artery was associated with future risk of acute coronary syndrome. However, impact of intrastent yellow plaque has not fully understood. Purpose: This study was investigated to assess the association of the grade of intrastent yellow plaque observed by coronary angioscopy at late phase after drug-eluting stents (DES) implantation and clinical outcome. Methods: This study consisted of 97 patients tread with DES implantation (39 patients with sirolimus-eluting stents ; 9 patients with paclitaxel-eluting stents; 24 patients with everolimus-eluting stents; 6 patients with zotalolimus-eluting stents; 19 patients with biolimus-eluting stents ). Coronary angioscopy was performed 8 months after DES implantation. The plaque color at stent segment was grade as 0 (white), 1 (light yellow), 2 (yellow), 3 (bright yellow). The maximum color grade of the plaques in stent segment was assessed. We divided these patients into 2 groups (53 patients with yellow plaque grade 2 or 3; 44 patients with yellow plaque grade 0 or 1). We evaluated the incidence of revascularization, such as percutaneous coronary intervention or coronary artery bypass graft. Results: Kaplan-Meier curves for 7-year Revascularization free rate are shown in Figure. Revascularization free rate was tend to be higher in patients with yellow grade 0/1 than those with yellow grade 2/3. Conclusion: The presence of intrastent yellow plaque at late phase after stent implantation might be associated with the future revascularization in coronary artery disease.