Effect of plaque volume on subsequent vessel remodeling at edges of sirolimus-eluting stents.
Serial (baseline and 9-month follow-up) intravascular ultrasound analysis was performed at 5-mm reference segments immediately proximal and distal to the sirolimus-eluting stent (SES) in 33 lesions. Proximal and distal reference segments were divided into 1-mm subsegments. Between postintervention and follow-up intravascular ultrasound studies, there were significant decreases in the lumen and increases in plaque & media areas in the subsegment closest to the distal edge, with no change in external elastic membrane area. There was no significant change in external elastic membrane, lumen, and plaque & media areas within the other subsegments. At the nearest 1-mm subsegment from the proximal and distal edges, baseline plaque & media area was associated with subsequent vessel remodeling. In conclusion, a large amount of plaque at the SES edge may be a risk of negative remodeling at follow-up (stent edge restenosis). It supports the importance of "normal-to-normal" SES deployment.
Asano
Tatsuhiko
T
Department of Cardiovascular Science and Medicine, Chiba University Graduate School of Medicine, Chiba, Japan.
Kobayashi
Yoshio
Y
Mintz
Gary S
GS
Ishio
Naoki
N
Fujimaki
Shigenori
S
Ogawa
Yasuhide
Y
Nakayama
Takashi
T
Kuroda
Nakabumi
N
Komuro
Issei
I
D000368:Aged; D017023:Coronary Angiography; D003327:Coronary Disease / Q000628:therapy*; D023903:Coronary Restenosis / Q000517:prevention & control*; D003331:Coronary Vessels / Q000473:pathology / Q000502:physiology*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D012044:Regression Analysis; D020123:Sirolimus / Q000008:administration & dosage*; D015607:Stents; D016896:Treatment Outcome; D018084:Ultrasonography, Interventional
D020123:Sirolimus