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.
Hong
Myeong-Ki
MK
Department of Medicine, University of Ulsan College of Medicine, Cardiac Center, Asan Medical Center, Seoul, Korea.
Lee
Cheol Whan
CW
Kim
June-Hong
JH
Kim
Young-Hak
YH
Song
Jong-Min
JM
Kang
Duk-Hyun
DH
Song
Jae-Kwan
JK
Kim
Jae-Joong
JJ
Park
Seong-Wook
SW
Park
Seung-Jung
SJ
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