Abstract 14448: Impact of Stent Fracture and Stent Recoil on the Incidence and Timing of Stent Thrombosis After Drug-eluting Stent Implantation
Background: It has been reported that stent fracture after drug-eluting stent implantation could related to stent thrombosis. However, little is known about the relationship between stent thrombosis and stent recoil after drug-eluting stent implantation.
Methods: From November 2002 to March 2013, 9170 consecutive patients (15036 lesions) were treated with drug-eluting stents. We evaluated the incidence of stent fracture and stent recoil in the stent thrombosis cases.
Stent fracture was defined as complete or partial separation of the stent, and stent recoil was defined as axial recoil less than 80% of the stent diameter.
Results: Ninety-two stent thrombosis cases were observed in this study. Stent thrombosis with stent fracture was 15 cases (16.3%), and with stent recoil was 11 cases (12.0%). No significant difference was shown in the rate of stent thrombosis between stent fracture and stent recoil. The rate of VLST with stent fracture was significantly higher than the rate of SAT with stent fracture. On the contrary, there was no significant difference between the rate of VLST and SAT with stent recoil. Date are shown in the table.
Conclusion: Stent recoil was associated with stent thrombosis as stent fracture. But the impact on the timing of stent thrombosis was different between stent fracture and stent recoil. These results suggest that the existence and pattern of mechanical stress could affect the incidence and timing of stent thrombosis.
- © 2013 by American Heart Association, Inc.