Author/Authors :
Takebayashi، نويسنده , , Hideo and Kobayashi، نويسنده , , Yoshio and Mintz، نويسنده , , Gary S. and Carlier، نويسنده , , Stéphane G. and Fujii، نويسنده , , Kenichi and Yasuda، نويسنده , , Takenori and Moussa، نويسنده , , Issam and Mehran، نويسنده , , Roxana and Dangas، نويسنده , , George D. and Collins، نويسنده , , Michael B. and Kreps، نويسنده , , Edward and Lansky، نويسنده , , Alexandra J. and ، نويسنده ,
Abstract :
Intravascular ultrasound (IVUS) evaluation was performed in 33 lesions with sirolimus-eluting stent (SES) failure: 4 thromboses, 26 in-stent restenoses (including 6 edge stenoses), 4 new stenoses >5 mm proximal to the stent, and 1 patient with no evidence of the implanted SES (presumably because of embolization). A minimum stent area <5.0 mm2 (stent underexpansion) was observed in 67% of all SES failures (in particular, 67% of intrastent restenosis); negative remodeling was observed in 4 of 6 stent edge restenoses, and new lesions were secondary to an increase in plaque area.
