Abstract 16316: Angiographic Outcomes After Percutaneous Coronary Intervention for Definite Stent Thrombosis
Background: Angiographic outcomes after percutaneous coronary intervention (PCI) for stent thrombosis (ST) have not been reported. In this study, we compared angiographic outcomes after PCI for ST between the timing of ST occurrence and between additional stenting and balloon angioplasty.
Methods: From January 2001 to October 2011, 152 patients (161 lesions) underwent PCI for definite ST. Of these patients, 134 patients (139 lesions) have survived to discharge, and we compared angiographic results between early, late, and very late ST and between addional stenting and balloon angioplasty. Angiographic follow-up was scheduled from 6 to 8 months after PCI by coronary angiography, but was performed earlier if ischemia was indicated clinically. Target lesion revascularization (TLR) was evaluated at 1 year after PCI for ST.
Results: Angiographic follow-up was performed in 113 lesions (81.3%). Serial quantitative coronary angiographic results are shown in the table. Very late ST had significantly better angiographic outcomes than both early and late ST. The TLR rate at 1 year was significantly lower in very late ST (7.7%) than in both early (29.0%, p=0.002) and late ST (32.3%, p=0.003). There was no significant difference in the follow-up angiographic results between the additional stenting and balloon angioplasty groups. The TLR rate at 1 year was similar between the 2 groups (18.4% vs. 23.5%, p=0.45).
Conclusion: Additional stenting for stent thrombosis was not associated with the favorable angiographic outcomes. Very late ST had better angiographic outcomes than both early and late ST.
- © 2013 by American Heart Association, Inc.