Impact of various intravascular ultrasound criteria for stent optimization on the six-month angiographic restenosis.
We evaluated the impact of different intravascular ultrasound (IVUS) criteria on 6-month angiographic restenosis in 511 patients with 560 lesions. Seven IVUS criteria were evaluated in this study; stent area at lesion segment 1) > or = 100% of distal reference lumen area, 2) > or = 90% of distal reference lumen area, 3) > or = 80% of average reference lumen area, 4) > or = 90% of average reference lumen area, 5) > or = 55% of average reference vessel area, 6) >/= 7 mm(2), and 7) > or = 2). Using the relative measurement (criteria 1-5), the angiographic restenosis rate was not statistically different. However, absolute measurement of stent area > or = 9 mm(2) (criteria 6 and 7) were associated with significantly lower restenosis rate (14.8% vs. 30.9%, P = 0.001, and 13.5% vs. 24.6%, P = 0.006, respectively). In conclusions, using the relative measurement of IVUS criteria, the occurrence of angiographic restenosis might not be predicted. The absolute measurement of IVUS stent area was the predictor of angiographic restenosis.
Department of Medicine, University of Ulsan College of Medicine, Cardiac Center, Asan Medical Center, Seoul, Korea.
Myeong-Ki
MK
Hong
Cheol Whan
CW
Lee
June-Hong
JH
Kim
Young-Hak
YH
Kim
Jong-Min
JM
Song
Duk-Hyun
DH
Kang
Jae-Kwan
JK
Song
Jae-Joong
JJ
Kim
Seong-Wook
SW
Park
Seung-Jung
SJ
Park
D000368:Aged; D017023:Coronary Angiography; D023903:Coronary Restenosis / Q000000981:diagnostic imaging*; D003331:Coronary Vessels / Q000000981:diagnostic imaging*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D015607:Stents; D018084:Ultrasonography, Interventional